<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019e6a4b-7a5e-7310-91f2-b61c607cdc50,g:1baaf1df-02ff-4747-90c5-c32494ef6dc8-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://chnbrdg.com/role/CoverPage" xlink:type="simple" xlink:href="chnbrdg-20260630.xsd#CoverPage"/>
  <link:definitionLink xlink:role="http://chnbrdg.com/role/CoverPage" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationLineItems_019e6a4b-7c8c-7f69-a454-70ca5e8deb2c" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationTable_019e6a4b-7c8c-7b89-8883-b447b6b85547" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentInformationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dei_DocumentInformationLineItems_019e6a4b-7c8c-7f69-a454-70ca5e8deb2c" xlink:to="loc_dei_DocumentInformationTable_019e6a4b-7c8c-7b89-8883-b447b6b85547" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_019e6a4b-7c8c-730a-9136-d28251cc827f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dei_DocumentInformationTable_019e6a4b-7c8c-7b89-8883-b447b6b85547" xlink:to="loc_us-gaap_StatementClassOfStockAxis_019e6a4b-7c8c-730a-9136-d28251cc827f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_019e6a4b-7c8c-730a-9136-d28251cc827f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_019e6a4b-7c8c-730a-9136-d28251cc827f" xlink:to="loc_us-gaap_ClassOfStockDomain_019e6a4b-7c8c-730a-9136-d28251cc827f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_019e6a4b-7c8c-70b7-9933-cd5d0f612d89" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_019e6a4b-7c8c-730a-9136-d28251cc827f" xlink:to="loc_us-gaap_ClassOfStockDomain_019e6a4b-7c8c-70b7-9933-cd5d0f612d89" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_019e6a4b-7c8c-75fb-a22e-c75887aae031" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_019e6a4b-7c8c-70b7-9933-cd5d0f612d89" xlink:to="loc_us-gaap_CommonClassAMember_019e6a4b-7c8c-75fb-a22e-c75887aae031" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassBMember_019e6a4b-7c8c-79ff-bc13-0bee989af8cc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonClassBMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_019e6a4b-7c8c-70b7-9933-cd5d0f612d89" xlink:to="loc_us-gaap_CommonClassBMember_019e6a4b-7c8c-79ff-bc13-0bee989af8cc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_019e6a4b-7c8c-702c-ac43-d9101d99139b" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentType"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e6a4b-7c8c-7f69-a454-70ca5e8deb2c" xlink:to="loc_dei_DocumentType_019e6a4b-7c8c-702c-ac43-d9101d99139b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentQuarterlyReport_019e6a4b-7c8c-7b6f-b413-dfa95d642f6d" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentQuarterlyReport"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e6a4b-7c8c-7f69-a454-70ca5e8deb2c" xlink:to="loc_dei_DocumentQuarterlyReport_019e6a4b-7c8c-7b6f-b413-dfa95d642f6d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_019e6a4b-7c8c-75f2-ba84-6967dbc5052e" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentPeriodEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e6a4b-7c8c-7f69-a454-70ca5e8deb2c" xlink:to="loc_dei_DocumentPeriodEndDate_019e6a4b-7c8c-75f2-ba84-6967dbc5052e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentTransitionReport_019e6a4b-7c8c-7c32-a05a-d498890f0d7d" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentTransitionReport"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e6a4b-7c8c-7f69-a454-70ca5e8deb2c" xlink:to="loc_dei_DocumentTransitionReport_019e6a4b-7c8c-7c32-a05a-d498890f0d7d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_019e6a4b-7c8c-7c5d-a292-3d11f4387cdd" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityFileNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e6a4b-7c8c-7f69-a454-70ca5e8deb2c" xlink:to="loc_dei_EntityFileNumber_019e6a4b-7c8c-7c5d-a292-3d11f4387cdd" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_019e6a4b-7c8c-7f21-996f-4b59d1f52cb2" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityRegistrantName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e6a4b-7c8c-7f69-a454-70ca5e8deb2c" xlink:to="loc_dei_EntityRegistrantName_019e6a4b-7c8c-7f21-996f-4b59d1f52cb2" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_019e6a4b-7c8c-7ea3-a6e0-645558af5c1f" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e6a4b-7c8c-7f69-a454-70ca5e8deb2c" xlink:to="loc_dei_EntityIncorporationStateCountryCode_019e6a4b-7c8c-7ea3-a6e0-645558af5c1f" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_019e6a4b-7c8c-744c-936f-1ceafbb565bc" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e6a4b-7c8c-7f69-a454-70ca5e8deb2c" xlink:to="loc_dei_EntityTaxIdentificationNumber_019e6a4b-7c8c-744c-936f-1ceafbb565bc" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_019e6a4b-7c8c-7fbe-b598-69fe8a6f5508" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressAddressLine1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e6a4b-7c8c-7f69-a454-70ca5e8deb2c" xlink:to="loc_dei_EntityAddressAddressLine1_019e6a4b-7c8c-7fbe-b598-69fe8a6f5508" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine2_019e6a4b-7c8c-7336-89fe-e7b5e6576355" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressAddressLine2"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e6a4b-7c8c-7f69-a454-70ca5e8deb2c" xlink:to="loc_dei_EntityAddressAddressLine2_019e6a4b-7c8c-7336-89fe-e7b5e6576355" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_019e6a4b-7c8c-79e1-b03f-211e53814ece" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressCityOrTown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e6a4b-7c8c-7f69-a454-70ca5e8deb2c" xlink:to="loc_dei_EntityAddressCityOrTown_019e6a4b-7c8c-79e1-b03f-211e53814ece" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_019e6a4b-7c8c-7896-9684-864f20a392d7" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressStateOrProvince"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e6a4b-7c8c-7f69-a454-70ca5e8deb2c" xlink:to="loc_dei_EntityAddressStateOrProvince_019e6a4b-7c8c-7896-9684-864f20a392d7" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_019e6a4b-7c8c-756a-be3c-375f93223493" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressPostalZipCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e6a4b-7c8c-7f69-a454-70ca5e8deb2c" xlink:to="loc_dei_EntityAddressPostalZipCode_019e6a4b-7c8c-756a-be3c-375f93223493" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_019e6a4b-7c8c-7250-9cb0-b11a759f738e" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CityAreaCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e6a4b-7c8c-7f69-a454-70ca5e8deb2c" xlink:to="loc_dei_CityAreaCode_019e6a4b-7c8c-7250-9cb0-b11a759f738e" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_019e6a4b-7c8c-728a-81f9-498233bcc5f2" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LocalPhoneNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e6a4b-7c8c-7f69-a454-70ca5e8deb2c" xlink:to="loc_dei_LocalPhoneNumber_019e6a4b-7c8c-728a-81f9-498233bcc5f2" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_019e6a4b-7c8c-70f4-abf3-3953db29e3c8" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_Security12bTitle"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e6a4b-7c8c-7f69-a454-70ca5e8deb2c" xlink:to="loc_dei_Security12bTitle_019e6a4b-7c8c-70f4-abf3-3953db29e3c8" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_019e6a4b-7c8c-79e9-a135-ae178598d8fc" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_TradingSymbol"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e6a4b-7c8c-7f69-a454-70ca5e8deb2c" xlink:to="loc_dei_TradingSymbol_019e6a4b-7c8c-79e9-a135-ae178598d8fc" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_019e6a4b-7c8c-7225-8101-ed21267b8d57" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_SecurityExchangeName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e6a4b-7c8c-7f69-a454-70ca5e8deb2c" xlink:to="loc_dei_SecurityExchangeName_019e6a4b-7c8c-7225-8101-ed21267b8d57" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCurrentReportingStatus_019e6a4b-7c8c-7397-8bab-619abb7c2eb6" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityCurrentReportingStatus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e6a4b-7c8c-7f69-a454-70ca5e8deb2c" xlink:to="loc_dei_EntityCurrentReportingStatus_019e6a4b-7c8c-7397-8bab-619abb7c2eb6" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityInteractiveDataCurrent_019e6a4b-7c8c-7858-bae6-9a280c552522" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityInteractiveDataCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e6a4b-7c8c-7f69-a454-70ca5e8deb2c" xlink:to="loc_dei_EntityInteractiveDataCurrent_019e6a4b-7c8c-7858-bae6-9a280c552522" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFilerCategory_019e6a4b-7c8c-71b2-a5d5-7c79a2843058" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityFilerCategory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e6a4b-7c8c-7f69-a454-70ca5e8deb2c" xlink:to="loc_dei_EntityFilerCategory_019e6a4b-7c8c-71b2-a5d5-7c79a2843058" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntitySmallBusiness_019e6a4b-7c8c-76f2-926b-5833f686206f" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntitySmallBusiness"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e6a4b-7c8c-7f69-a454-70ca5e8deb2c" xlink:to="loc_dei_EntitySmallBusiness_019e6a4b-7c8c-76f2-926b-5833f686206f" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_019e6a4b-7c8c-77dc-ad43-52a0472d2a42" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e6a4b-7c8c-7f69-a454-70ca5e8deb2c" xlink:to="loc_dei_EntityEmergingGrowthCompany_019e6a4b-7c8c-77dc-ad43-52a0472d2a42" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityExTransitionPeriod_019e6a4b-7c8c-7913-bcac-f942ccff3088" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityExTransitionPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e6a4b-7c8c-7f69-a454-70ca5e8deb2c" xlink:to="loc_dei_EntityExTransitionPeriod_019e6a4b-7c8c-7913-bcac-f942ccff3088" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityShellCompany_019e6a4b-7c8c-7e79-a25b-5c85a8f04af9" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityShellCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e6a4b-7c8c-7f69-a454-70ca5e8deb2c" xlink:to="loc_dei_EntityShellCompany_019e6a4b-7c8c-7e79-a25b-5c85a8f04af9" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCommonStockSharesOutstanding_019e6a4b-7c8c-7599-931a-414a4b87d723" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityCommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e6a4b-7c8c-7f69-a454-70ca5e8deb2c" xlink:to="loc_dei_EntityCommonStockSharesOutstanding_019e6a4b-7c8c-7599-931a-414a4b87d723" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_019e6a4b-7c8c-7876-9bd4-4dcf4a94c3a3" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityCentralIndexKey"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e6a4b-7c8c-7f69-a454-70ca5e8deb2c" xlink:to="loc_dei_EntityCentralIndexKey_019e6a4b-7c8c-7876-9bd4-4dcf4a94c3a3" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CurrentFiscalYearEndDate_019e6a4b-7c8c-78ac-a868-a9e5ec2f5508" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CurrentFiscalYearEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e6a4b-7c8c-7f69-a454-70ca5e8deb2c" xlink:to="loc_dei_CurrentFiscalYearEndDate_019e6a4b-7c8c-78ac-a868-a9e5ec2f5508" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_019e6a4b-7c8c-7a57-979e-a010bb9bd8f0" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_AmendmentFlag"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e6a4b-7c8c-7f69-a454-70ca5e8deb2c" xlink:to="loc_dei_AmendmentFlag_019e6a4b-7c8c-7a57-979e-a010bb9bd8f0" xlink:type="arc" order="28"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalYearFocus_019e6a4b-7c8c-77f3-85e6-775d49e58370" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentFiscalYearFocus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e6a4b-7c8c-7f69-a454-70ca5e8deb2c" xlink:to="loc_dei_DocumentFiscalYearFocus_019e6a4b-7c8c-77f3-85e6-775d49e58370" xlink:type="arc" order="29"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalPeriodFocus_019e6a4b-7c8c-78b5-b04a-1f457234fd7b" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentFiscalPeriodFocus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e6a4b-7c8c-7f69-a454-70ca5e8deb2c" xlink:to="loc_dei_DocumentFiscalPeriodFocus_019e6a4b-7c8c-78b5-b04a-1f457234fd7b" xlink:type="arc" order="30"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://chnbrdg.com/role/ConsolidatedBalanceSheets" xlink:type="simple" xlink:href="chnbrdg-20260630.xsd#ConsolidatedBalanceSheets"/>
  <link:definitionLink xlink:role="http://chnbrdg.com/role/ConsolidatedBalanceSheets" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-7018-88b3-d96ef8a7cee9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_019e6a4b-7c8c-7d33-8fbd-56e0e8a26523" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-7018-88b3-d96ef8a7cee9" xlink:to="loc_us-gaap_StatementTable_019e6a4b-7c8c-7d33-8fbd-56e0e8a26523" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_019e6a4b-7c8c-752d-9061-7e866de7d1d4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_019e6a4b-7c8c-7d33-8fbd-56e0e8a26523" xlink:to="loc_us-gaap_StatementClassOfStockAxis_019e6a4b-7c8c-752d-9061-7e866de7d1d4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_019e6a4b-7c8c-752d-9061-7e866de7d1d4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_019e6a4b-7c8c-752d-9061-7e866de7d1d4" xlink:to="loc_us-gaap_ClassOfStockDomain_019e6a4b-7c8c-752d-9061-7e866de7d1d4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_019e6a4b-7c8c-7f47-8c1e-d229c404964e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_019e6a4b-7c8c-752d-9061-7e866de7d1d4" xlink:to="loc_us-gaap_ClassOfStockDomain_019e6a4b-7c8c-7f47-8c1e-d229c404964e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_019e6a4b-7c8c-7a44-b00a-f66c4391ed5a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_019e6a4b-7c8c-7f47-8c1e-d229c404964e" xlink:to="loc_us-gaap_CommonClassAMember_019e6a4b-7c8c-7a44-b00a-f66c4391ed5a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassBMember_019e6a4b-7c8c-7be6-aaa9-9a578a2969e1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonClassBMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_019e6a4b-7c8c-7f47-8c1e-d229c404964e" xlink:to="loc_us-gaap_CommonClassBMember_019e6a4b-7c8c-7be6-aaa9-9a578a2969e1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract_019e6a4b-7c8c-746c-9aaa-42454daab6bb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-7018-88b3-d96ef8a7cee9" xlink:to="loc_us-gaap_AssetsAbstract_019e6a4b-7c8c-746c-9aaa-42454daab6bb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndDueFromBanks_019e6a4b-7c8c-7a61-a879-3c8bdd0be60c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndDueFromBanks"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019e6a4b-7c8c-746c-9aaa-42454daab6bb" xlink:to="loc_us-gaap_CashAndDueFromBanks_019e6a4b-7c8c-7a61-a879-3c8bdd0be60c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestBearingDepositsInBanks_019e6a4b-7c8c-7d07-9d14-8b72d6f6f473" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestBearingDepositsInBanks"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019e6a4b-7c8c-746c-9aaa-42454daab6bb" xlink:to="loc_us-gaap_InterestBearingDepositsInBanks_019e6a4b-7c8c-7d07-9d14-8b72d6f6f473" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019e6a4b-7c8c-7445-8d90-b2ba57c612e9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019e6a4b-7c8c-746c-9aaa-42454daab6bb" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019e6a4b-7c8c-7445-8d90-b2ba57c612e9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_019e6a4b-7c8c-71b4-a912-62e43344a5de" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019e6a4b-7c8c-746c-9aaa-42454daab6bb" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_019e6a4b-7c8c-71b4-a912-62e43344a5de" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss_019e6a4b-7c8c-73b8-9206-5d69636b85f5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019e6a4b-7c8c-746c-9aaa-42454daab6bb" xlink:to="loc_us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss_019e6a4b-7c8c-73b8-9206-5d69636b85f5" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNiCurrentAndNoncurrent_019e6a4b-7c8c-7fe8-aee9-b0dd2422e1a6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquitySecuritiesFvNiCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019e6a4b-7c8c-746c-9aaa-42454daab6bb" xlink:to="loc_us-gaap_EquitySecuritiesFvNiCurrentAndNoncurrent_019e6a4b-7c8c-7fe8-aee9-b0dd2422e1a6" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedInvestments_019e6a4b-7c8c-7e21-8ce8-3494596da0de" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019e6a4b-7c8c-746c-9aaa-42454daab6bb" xlink:to="loc_us-gaap_RestrictedInvestments_019e6a4b-7c8c-7e21-8ce8-3494596da0de" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss_019e6a4b-7c8c-7c5c-a5fc-30bcdb012c4a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019e6a4b-7c8c-746c-9aaa-42454daab6bb" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss_019e6a4b-7c8c-7c5c-a5fc-30bcdb012c4a" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_019e6a4b-7c8c-74f2-bde5-e1ced19169e7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019e6a4b-7c8c-746c-9aaa-42454daab6bb" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_019e6a4b-7c8c-74f2-bde5-e1ced19169e7" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestReceivable_019e6a4b-7c8c-731b-a4e2-8844f9f20251" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019e6a4b-7c8c-746c-9aaa-42454daab6bb" xlink:to="loc_us-gaap_InterestReceivable_019e6a4b-7c8c-731b-a4e2-8844f9f20251" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssets_019e6a4b-7c8c-74a7-86b1-e965770287bb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019e6a4b-7c8c-746c-9aaa-42454daab6bb" xlink:to="loc_us-gaap_OtherAssets_019e6a4b-7c8c-74a7-86b1-e965770287bb" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_019e6a4b-7c8c-7c58-ab16-48e587c9c091" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019e6a4b-7c8c-746c-9aaa-42454daab6bb" xlink:to="loc_us-gaap_Assets_019e6a4b-7c8c-7c58-ab16-48e587c9c091" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019e6a4b-7c8c-7e2d-9e6b-cb21bb836dca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-7018-88b3-d96ef8a7cee9" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019e6a4b-7c8c-7e2d-9e6b-cb21bb836dca" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAbstract_019e6a4b-7c8c-710c-b7a2-1db51289b8fc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019e6a4b-7c8c-7e2d-9e6b-cb21bb836dca" xlink:to="loc_us-gaap_LiabilitiesAbstract_019e6a4b-7c8c-710c-b7a2-1db51289b8fc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepositsAbstract_019e6a4b-7c8c-7995-8836-978f9c1342dc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepositsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_019e6a4b-7c8c-710c-b7a2-1db51289b8fc" xlink:to="loc_us-gaap_DepositsAbstract_019e6a4b-7c8c-7995-8836-978f9c1342dc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoninterestBearingDepositLiabilities_019e6a4b-7c8c-7468-9f10-33f1fb36aae3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoninterestBearingDepositLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DepositsAbstract_019e6a4b-7c8c-7995-8836-978f9c1342dc" xlink:to="loc_us-gaap_NoninterestBearingDepositLiabilities_019e6a4b-7c8c-7468-9f10-33f1fb36aae3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_DepositsSavingsInterestBearingCheckingAndMoneyMarketDeposits_019e6a4b-7c8c-7a2e-98bd-e7c5a310c35c" xlink:href="chnbrdg-20260630.xsd#chnbrdg_DepositsSavingsInterestBearingCheckingAndMoneyMarketDeposits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DepositsAbstract_019e6a4b-7c8c-7995-8836-978f9c1342dc" xlink:to="loc_chnbrdg_DepositsSavingsInterestBearingCheckingAndMoneyMarketDeposits_019e6a4b-7c8c-7a2e-98bd-e7c5a310c35c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TimeDepositsAtOrAboveFDICInsuranceLimit_019e6a4b-7c8c-736b-b7ce-64262cfd4a7c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TimeDepositsAtOrAboveFDICInsuranceLimit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DepositsAbstract_019e6a4b-7c8c-7995-8836-978f9c1342dc" xlink:to="loc_us-gaap_TimeDepositsAtOrAboveFDICInsuranceLimit_019e6a4b-7c8c-736b-b7ce-64262cfd4a7c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_TimeDepositsOther_019e6a4b-7c8c-76ef-8bc7-a208b23eccdb" xlink:href="chnbrdg-20260630.xsd#chnbrdg_TimeDepositsOther"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DepositsAbstract_019e6a4b-7c8c-7995-8836-978f9c1342dc" xlink:to="loc_chnbrdg_TimeDepositsOther_019e6a4b-7c8c-76ef-8bc7-a208b23eccdb" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Deposits_019e6a4b-7c8c-7b08-a4eb-5a1ff0d19022" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Deposits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DepositsAbstract_019e6a4b-7c8c-7995-8836-978f9c1342dc" xlink:to="loc_us-gaap_Deposits_019e6a4b-7c8c-7b08-a4eb-5a1ff0d19022" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestPayableCurrentAndNoncurrent_019e6a4b-7c8c-76a2-a626-601b03d6e7e0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestPayableCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_019e6a4b-7c8c-710c-b7a2-1db51289b8fc" xlink:to="loc_us-gaap_InterestPayableCurrentAndNoncurrent_019e6a4b-7c8c-76a2-a626-601b03d6e7e0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesAndOtherLiabilities_019e6a4b-7c8c-7a82-a1da-865cccc9936b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccruedLiabilitiesAndOtherLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_019e6a4b-7c8c-710c-b7a2-1db51289b8fc" xlink:to="loc_us-gaap_AccruedLiabilitiesAndOtherLiabilities_019e6a4b-7c8c-7a82-a1da-865cccc9936b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_019e6a4b-7c8c-7ab9-8627-59b4d8cd93f9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Liabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_019e6a4b-7c8c-710c-b7a2-1db51289b8fc" xlink:to="loc_us-gaap_Liabilities_019e6a4b-7c8c-7ab9-8627-59b4d8cd93f9" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_019e6a4b-7c8c-7410-9c50-26b1e2bea513" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019e6a4b-7c8c-7e2d-9e6b-cb21bb836dca" xlink:to="loc_us-gaap_CommitmentsAndContingencies_019e6a4b-7c8c-7410-9c50-26b1e2bea513" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityAbstract_019e6a4b-7c8c-77ee-b59a-72c10684870f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019e6a4b-7c8c-7e2d-9e6b-cb21bb836dca" xlink:to="loc_us-gaap_StockholdersEquityAbstract_019e6a4b-7c8c-77ee-b59a-72c10684870f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockValue_019e6a4b-7c8c-77c5-89cc-2a7758724ad2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_019e6a4b-7c8c-77ee-b59a-72c10684870f" xlink:to="loc_us-gaap_PreferredStockValue_019e6a4b-7c8c-77c5-89cc-2a7758724ad2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_019e6a4b-7c8c-76e3-b07d-48d4b3a5b10e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_019e6a4b-7c8c-77ee-b59a-72c10684870f" xlink:to="loc_us-gaap_CommonStockValue_019e6a4b-7c8c-76e3-b07d-48d4b3a5b10e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapital_019e6a4b-7c8c-7984-af9d-d28e8b7c59d3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdditionalPaidInCapital"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_019e6a4b-7c8c-77ee-b59a-72c10684870f" xlink:to="loc_us-gaap_AdditionalPaidInCapital_019e6a4b-7c8c-7984-af9d-d28e8b7c59d3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_019e6a4b-7c8c-7cb3-aab1-af41b80cb1af" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_019e6a4b-7c8c-77ee-b59a-72c10684870f" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_019e6a4b-7c8c-7cb3-aab1-af41b80cb1af" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_019e6a4b-7c8c-789c-aa9d-6032a85ef0f2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_019e6a4b-7c8c-77ee-b59a-72c10684870f" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_019e6a4b-7c8c-789c-aa9d-6032a85ef0f2" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019e6a4b-7c8c-7cad-aa87-6f88635cdeb9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_019e6a4b-7c8c-77ee-b59a-72c10684870f" xlink:to="loc_us-gaap_StockholdersEquity_019e6a4b-7c8c-7cad-aa87-6f88635cdeb9" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_019e6a4b-7c8c-701d-b18e-c22ff8472009" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019e6a4b-7c8c-7e2d-9e6b-cb21bb836dca" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_019e6a4b-7c8c-701d-b18e-c22ff8472009" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://chnbrdg.com/role/ConsolidatedBalanceSheetsParenthetical" xlink:type="simple" xlink:href="chnbrdg-20260630.xsd#ConsolidatedBalanceSheetsParenthetical"/>
  <link:definitionLink xlink:role="http://chnbrdg.com/role/ConsolidatedBalanceSheetsParenthetical" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-79f0-b2f9-5a4974a0e889" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_019e6a4b-7c8c-72dc-b58e-38a46f7fd5db" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-79f0-b2f9-5a4974a0e889" xlink:to="loc_us-gaap_StatementTable_019e6a4b-7c8c-72dc-b58e-38a46f7fd5db" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_019e6a4b-7c8c-7b18-9a0a-2d2213274056" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_019e6a4b-7c8c-72dc-b58e-38a46f7fd5db" xlink:to="loc_us-gaap_StatementClassOfStockAxis_019e6a4b-7c8c-7b18-9a0a-2d2213274056" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_019e6a4b-7c8c-7b18-9a0a-2d2213274056_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_019e6a4b-7c8c-7b18-9a0a-2d2213274056" xlink:to="loc_us-gaap_ClassOfStockDomain_019e6a4b-7c8c-7b18-9a0a-2d2213274056_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_019e6a4b-7c8c-71cd-8a9c-4951891245d1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_019e6a4b-7c8c-7b18-9a0a-2d2213274056" xlink:to="loc_us-gaap_ClassOfStockDomain_019e6a4b-7c8c-71cd-8a9c-4951891245d1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_019e6a4b-7c8c-7ece-857c-f795e34f2b18" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_019e6a4b-7c8c-71cd-8a9c-4951891245d1" xlink:to="loc_us-gaap_CommonClassAMember_019e6a4b-7c8c-7ece-857c-f795e34f2b18" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassBMember_019e6a4b-7c8c-7796-9e21-9dcf14223edb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonClassBMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_019e6a4b-7c8c-71cd-8a9c-4951891245d1" xlink:to="loc_us-gaap_CommonClassBMember_019e6a4b-7c8c-7796-9e21-9dcf14223edb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest_019e6a4b-7c8c-7307-9f4f-9fd6c7ecf865" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-79f0-b2f9-5a4974a0e889" xlink:to="loc_us-gaap_DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest_019e6a4b-7c8c-7307-9f4f-9fd6c7ecf865" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesFairValue_019e6a4b-7c8c-7dc7-ba33-d6418e58a3e9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HeldToMaturitySecuritiesFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-79f0-b2f9-5a4974a0e889" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesFairValue_019e6a4b-7c8c-7dc7-ba33-d6418e58a3e9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest_019e6a4b-7c8c-7dd9-ada1-f7761f01312c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-79f0-b2f9-5a4974a0e889" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest_019e6a4b-7c8c-7dd9-ada1-f7761f01312c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_019e6a4b-7c8c-75f6-a9e3-39741cdd612c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-79f0-b2f9-5a4974a0e889" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_019e6a4b-7c8c-75f6-a9e3-39741cdd612c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockParOrStatedValuePerShare_019e6a4b-7c8c-7101-9f0a-b954ac62e88c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-79f0-b2f9-5a4974a0e889" xlink:to="loc_us-gaap_PreferredStockParOrStatedValuePerShare_019e6a4b-7c8c-7101-9f0a-b954ac62e88c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesAuthorized_019e6a4b-7c8c-76e3-b030-e4cbad512c5d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-79f0-b2f9-5a4974a0e889" xlink:to="loc_us-gaap_PreferredStockSharesAuthorized_019e6a4b-7c8c-76e3-b030-e4cbad512c5d" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesIssued_019e6a4b-7c8c-7e4d-82e0-90996dbd1933" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-79f0-b2f9-5a4974a0e889" xlink:to="loc_us-gaap_PreferredStockSharesIssued_019e6a4b-7c8c-7e4d-82e0-90996dbd1933" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesOutstanding_019e6a4b-7c8c-7be6-8c92-203d5ed7e671" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-79f0-b2f9-5a4974a0e889" xlink:to="loc_us-gaap_PreferredStockSharesOutstanding_019e6a4b-7c8c-7be6-8c92-203d5ed7e671" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_019e6a4b-7c8c-7000-80f8-e5178e6f29e3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-79f0-b2f9-5a4974a0e889" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_019e6a4b-7c8c-7000-80f8-e5178e6f29e3" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_019e6a4b-7c8c-7f9b-8600-9765c6ac916a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-79f0-b2f9-5a4974a0e889" xlink:to="loc_us-gaap_CommonStockSharesAuthorized_019e6a4b-7c8c-7f9b-8600-9765c6ac916a" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesIssued_019e6a4b-7c8c-73df-8953-26c23228587b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-79f0-b2f9-5a4974a0e889" xlink:to="loc_us-gaap_CommonStockSharesIssued_019e6a4b-7c8c-73df-8953-26c23228587b" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_019e6a4b-7c8c-7cfb-b797-74fdb7084f46" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-79f0-b2f9-5a4974a0e889" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_019e6a4b-7c8c-7cfb-b797-74fdb7084f46" xlink:type="arc" order="11"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://chnbrdg.com/role/ConsolidatedStatementsofIncome" xlink:type="simple" xlink:href="chnbrdg-20260630.xsd#ConsolidatedStatementsofIncome"/>
  <link:definitionLink xlink:role="http://chnbrdg.com/role/ConsolidatedStatementsofIncome" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-7fd4-a100-2d9f85ed175c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_019e6a4b-7c8c-740c-94df-dff441e7620e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-7fd4-a100-2d9f85ed175c" xlink:to="loc_us-gaap_StatementTable_019e6a4b-7c8c-740c-94df-dff441e7620e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_019e6a4b-7c8c-7da4-b2ad-344e0cb4dd90" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_019e6a4b-7c8c-740c-94df-dff441e7620e" xlink:to="loc_srt_ProductOrServiceAxis_019e6a4b-7c8c-7da4-b2ad-344e0cb4dd90" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019e6a4b-7c8c-7da4-b2ad-344e0cb4dd90_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_019e6a4b-7c8c-7da4-b2ad-344e0cb4dd90" xlink:to="loc_srt_ProductsAndServicesDomain_019e6a4b-7c8c-7da4-b2ad-344e0cb4dd90_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019e6a4b-7c8c-75b4-bcc1-995379ac32e4" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_019e6a4b-7c8c-7da4-b2ad-344e0cb4dd90" xlink:to="loc_srt_ProductsAndServicesDomain_019e6a4b-7c8c-75b4-bcc1-995379ac32e4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_TrustAndWealthManagementIncomeMember_019e6a4b-7c8c-72d9-a70c-11627d58a11f" xlink:href="chnbrdg-20260630.xsd#chnbrdg_TrustAndWealthManagementIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e6a4b-7c8c-75b4-bcc1-995379ac32e4" xlink:to="loc_chnbrdg_TrustAndWealthManagementIncomeMember_019e6a4b-7c8c-72d9-a70c-11627d58a11f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_AccountServiceChargesIncomeMember_019e6a4b-7c8c-72ec-bdda-ec8aee4cae97" xlink:href="chnbrdg-20260630.xsd#chnbrdg_AccountServiceChargesIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e6a4b-7c8c-75b4-bcc1-995379ac32e4" xlink:to="loc_chnbrdg_AccountServiceChargesIncomeMember_019e6a4b-7c8c-72ec-bdda-ec8aee4cae97" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeDomesticDepositsAbstract_019e6a4b-7c8c-7871-b012-e0d1c9ecab86" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestIncomeDomesticDepositsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-7fd4-a100-2d9f85ed175c" xlink:to="loc_us-gaap_InterestIncomeDomesticDepositsAbstract_019e6a4b-7c8c-7871-b012-e0d1c9ecab86" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestAndFeeIncomeLoansAndLeases_019e6a4b-7c8c-74f6-aa4b-b0116b7810c3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestAndFeeIncomeLoansAndLeases"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InterestIncomeDomesticDepositsAbstract_019e6a4b-7c8c-7871-b012-e0d1c9ecab86" xlink:to="loc_us-gaap_InterestAndFeeIncomeLoansAndLeases_019e6a4b-7c8c-74f6-aa4b-b0116b7810c3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestAndDividendIncomeSecurities_019e6a4b-7c8c-75d5-9d74-4e29520328b7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestAndDividendIncomeSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InterestIncomeDomesticDepositsAbstract_019e6a4b-7c8c-7871-b012-e0d1c9ecab86" xlink:to="loc_us-gaap_InterestAndDividendIncomeSecurities_019e6a4b-7c8c-75d5-9d74-4e29520328b7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeSecuritiesTaxExempt_019e6a4b-7c8c-7036-a226-d8c7542995f2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestIncomeSecuritiesTaxExempt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InterestIncomeDomesticDepositsAbstract_019e6a4b-7c8c-7871-b012-e0d1c9ecab86" xlink:to="loc_us-gaap_InterestIncomeSecuritiesTaxExempt_019e6a4b-7c8c-7036-a226-d8c7542995f2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeDepositsWithFinancialInstitutions_019e6a4b-7c8c-7b48-b405-ef98a8ce6f8a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestIncomeDepositsWithFinancialInstitutions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InterestIncomeDomesticDepositsAbstract_019e6a4b-7c8c-7871-b012-e0d1c9ecab86" xlink:to="loc_us-gaap_InterestIncomeDepositsWithFinancialInstitutions_019e6a4b-7c8c-7b48-b405-ef98a8ce6f8a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestAndDividendIncomeOperating_019e6a4b-7c8c-7c58-9390-b27ca191e1fd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestAndDividendIncomeOperating"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InterestIncomeDomesticDepositsAbstract_019e6a4b-7c8c-7871-b012-e0d1c9ecab86" xlink:to="loc_us-gaap_InterestAndDividendIncomeOperating_019e6a4b-7c8c-7c58-9390-b27ca191e1fd" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseAbstract_019e6a4b-7c8c-78d6-bcb0-f1a4a9d88e96" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-7fd4-a100-2d9f85ed175c" xlink:to="loc_us-gaap_InterestExpenseAbstract_019e6a4b-7c8c-78d6-bcb0-f1a4a9d88e96" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseDeposits_019e6a4b-7c8c-73a8-825e-9fc4995cdde8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseDeposits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InterestExpenseAbstract_019e6a4b-7c8c-78d6-bcb0-f1a4a9d88e96" xlink:to="loc_us-gaap_InterestExpenseDeposits_019e6a4b-7c8c-73a8-825e-9fc4995cdde8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseOperating_019e6a4b-7c8c-7e91-9de5-4c9b0224c8f5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseOperating"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InterestExpenseAbstract_019e6a4b-7c8c-78d6-bcb0-f1a4a9d88e96" xlink:to="loc_us-gaap_InterestExpenseOperating_019e6a4b-7c8c-7e91-9de5-4c9b0224c8f5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseNet_019e6a4b-7c8c-7cdf-a2bc-8b5aaae93279" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestIncomeExpenseNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-7fd4-a100-2d9f85ed175c" xlink:to="loc_us-gaap_InterestIncomeExpenseNet_019e6a4b-7c8c-7cdf-a2bc-8b5aaae93279" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetInvestmentInLeaseCreditLossExpenseReversalAbstract_019e6a4b-7c8c-7736-b7c1-30fd7f834e7f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetInvestmentInLeaseCreditLossExpenseReversalAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-7fd4-a100-2d9f85ed175c" xlink:to="loc_us-gaap_NetInvestmentInLeaseCreditLossExpenseReversalAbstract_019e6a4b-7c8c-7736-b7c1-30fd7f834e7f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal_019e6a4b-7c8c-78a9-bb59-8ed0f1ed522e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetInvestmentInLeaseCreditLossExpenseReversalAbstract_019e6a4b-7c8c-7736-b7c1-30fd7f834e7f" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal_019e6a4b-7c8c-78a9-bb59-8ed0f1ed522e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForOtherCreditLosses_019e6a4b-7c8c-7aa6-bc99-b621f594759a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProvisionForOtherCreditLosses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetInvestmentInLeaseCreditLossExpenseReversalAbstract_019e6a4b-7c8c-7736-b7c1-30fd7f834e7f" xlink:to="loc_us-gaap_ProvisionForOtherCreditLosses_019e6a4b-7c8c-7aa6-bc99-b621f594759a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForLoanLeaseAndOtherLosses_019e6a4b-7c8c-780c-97f1-2da3517ede6b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProvisionForLoanLeaseAndOtherLosses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetInvestmentInLeaseCreditLossExpenseReversalAbstract_019e6a4b-7c8c-7736-b7c1-30fd7f834e7f" xlink:to="loc_us-gaap_ProvisionForLoanLeaseAndOtherLosses_019e6a4b-7c8c-780c-97f1-2da3517ede6b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss_019e6a4b-7c8c-71c9-9403-925ff1717962" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-7fd4-a100-2d9f85ed175c" xlink:to="loc_us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss_019e6a4b-7c8c-71c9-9403-925ff1717962" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoninterestIncomeAbstract_019e6a4b-7c8c-7ca7-ba1c-85acb402c4d1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoninterestIncomeAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-7fd4-a100-2d9f85ed175c" xlink:to="loc_us-gaap_NoninterestIncomeAbstract_019e6a4b-7c8c-7ca7-ba1c-85acb402c4d1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_DepositPlacementServicesIncome_019e6a4b-7c8c-7838-8779-d6a27288de0f" xlink:href="chnbrdg-20260630.xsd#chnbrdg_DepositPlacementServicesIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NoninterestIncomeAbstract_019e6a4b-7c8c-7ca7-ba1c-85acb402c4d1" xlink:to="loc_chnbrdg_DepositPlacementServicesIncome_019e6a4b-7c8c-7838-8779-d6a27288de0f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_019e6a4b-7c8c-7623-b0f5-91a2c9cf4538" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NoninterestIncomeAbstract_019e6a4b-7c8c-7ca7-ba1c-85acb402c4d1" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_019e6a4b-7c8c-7623-b0f5-91a2c9cf4538" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfMortgageLoans_019e6a4b-7c8c-7fc9-8d00-c445fa69fffd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainLossOnSaleOfMortgageLoans"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NoninterestIncomeAbstract_019e6a4b-7c8c-7ca7-ba1c-85acb402c4d1" xlink:to="loc_us-gaap_GainLossOnSaleOfMortgageLoans_019e6a4b-7c8c-7fc9-8d00-c445fa69fffd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoninterestIncomeOther_019e6a4b-7c8c-77c2-b9aa-191660be2aa6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoninterestIncomeOther"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NoninterestIncomeAbstract_019e6a4b-7c8c-7ca7-ba1c-85acb402c4d1" xlink:to="loc_us-gaap_NoninterestIncomeOther_019e6a4b-7c8c-77c2-b9aa-191660be2aa6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoninterestIncome_019e6a4b-7c8c-7c79-a172-ecd1daaaee9d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoninterestIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NoninterestIncomeAbstract_019e6a4b-7c8c-7ca7-ba1c-85acb402c4d1" xlink:to="loc_us-gaap_NoninterestIncome_019e6a4b-7c8c-7c79-a172-ecd1daaaee9d" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoninterestExpenseAbstract_019e6a4b-7c8c-7c42-b0aa-c2f9cc4dfd59" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoninterestExpenseAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-7fd4-a100-2d9f85ed175c" xlink:to="loc_us-gaap_NoninterestExpenseAbstract_019e6a4b-7c8c-7c42-b0aa-c2f9cc4dfd59" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LaborAndRelatedExpense_019e6a4b-7c8c-701e-bc46-523833dc9d64" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LaborAndRelatedExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NoninterestExpenseAbstract_019e6a4b-7c8c-7c42-b0aa-c2f9cc4dfd59" xlink:to="loc_us-gaap_LaborAndRelatedExpense_019e6a4b-7c8c-701e-bc46-523833dc9d64" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommunicationsAndInformationTechnology_019e6a4b-7c8c-7b2a-a0e0-9f0b4e0a63ad" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommunicationsAndInformationTechnology"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NoninterestExpenseAbstract_019e6a4b-7c8c-7c42-b0aa-c2f9cc4dfd59" xlink:to="loc_us-gaap_CommunicationsAndInformationTechnology_019e6a4b-7c8c-7b2a-a0e0-9f0b4e0a63ad" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfessionalFees_019e6a4b-7c8c-7ab4-923b-72dbbab421dc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProfessionalFees"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NoninterestExpenseAbstract_019e6a4b-7c8c-7c42-b0aa-c2f9cc4dfd59" xlink:to="loc_us-gaap_ProfessionalFees_019e6a4b-7c8c-7ab4-923b-72dbbab421dc" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_FranchiseFeesTaxExpense_019e6a4b-7c8c-7fb8-a0ff-d64b81d5496d" xlink:href="chnbrdg-20260630.xsd#chnbrdg_FranchiseFeesTaxExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NoninterestExpenseAbstract_019e6a4b-7c8c-7c42-b0aa-c2f9cc4dfd59" xlink:to="loc_chnbrdg_FranchiseFeesTaxExpense_019e6a4b-7c8c-7fb8-a0ff-d64b81d5496d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OccupancyNet_019e6a4b-7c8c-7b2d-88cb-f02232f2b1a8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OccupancyNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NoninterestExpenseAbstract_019e6a4b-7c8c-7c42-b0aa-c2f9cc4dfd59" xlink:to="loc_us-gaap_OccupancyNet_019e6a4b-7c8c-7b2d-88cb-f02232f2b1a8" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FederalDepositInsuranceCorporationPremiumExpense_019e6a4b-7c8c-7e3a-9cf0-cb177a1e7c96" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FederalDepositInsuranceCorporationPremiumExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NoninterestExpenseAbstract_019e6a4b-7c8c-7c42-b0aa-c2f9cc4dfd59" xlink:to="loc_us-gaap_FederalDepositInsuranceCorporationPremiumExpense_019e6a4b-7c8c-7e3a-9cf0-cb177a1e7c96" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralInsuranceExpense_019e6a4b-7c8c-74e5-b5ef-a678dc75e87f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GeneralInsuranceExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NoninterestExpenseAbstract_019e6a4b-7c8c-7c42-b0aa-c2f9cc4dfd59" xlink:to="loc_us-gaap_GeneralInsuranceExpense_019e6a4b-7c8c-74e5-b5ef-a678dc75e87f" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoninterestExpenseDirectorsFees_019e6a4b-7c8c-7829-98a8-d9b104f1ddde" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoninterestExpenseDirectorsFees"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NoninterestExpenseAbstract_019e6a4b-7c8c-7c42-b0aa-c2f9cc4dfd59" xlink:to="loc_us-gaap_NoninterestExpenseDirectorsFees_019e6a4b-7c8c-7829-98a8-d9b104f1ddde" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoninterestExpense_019e6a4b-7c8c-7ee4-b1d6-063fc3571e7b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherNoninterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NoninterestExpenseAbstract_019e6a4b-7c8c-7c42-b0aa-c2f9cc4dfd59" xlink:to="loc_us-gaap_OtherNoninterestExpense_019e6a4b-7c8c-7ee4-b1d6-063fc3571e7b" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoninterestExpense_019e6a4b-7c8c-730d-afd0-3052c2740772" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoninterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NoninterestExpenseAbstract_019e6a4b-7c8c-7c42-b0aa-c2f9cc4dfd59" xlink:to="loc_us-gaap_NoninterestExpense_019e6a4b-7c8c-730d-afd0-3052c2740772" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019e6a4b-7c8c-746f-8eb1-473f5f46a063" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-7fd4-a100-2d9f85ed175c" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019e6a4b-7c8c-746f-8eb1-473f5f46a063" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_019e6a4b-7c8c-76ba-b92e-67e409736f15" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-7fd4-a100-2d9f85ed175c" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_019e6a4b-7c8c-76ba-b92e-67e409736f15" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019e6a4b-7c8c-774a-9b95-ad46f641d0eb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-7fd4-a100-2d9f85ed175c" xlink:to="loc_us-gaap_NetIncomeLoss_019e6a4b-7c8c-774a-9b95-ad46f641d0eb" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_019e6a4b-7c8c-7ba0-ba39-1b07460d6130" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-7fd4-a100-2d9f85ed175c" xlink:to="loc_us-gaap_EarningsPerShareBasic_019e6a4b-7c8c-7ba0-ba39-1b07460d6130" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_019e6a4b-7c8c-7cbe-bdeb-28feda0b6df3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-7fd4-a100-2d9f85ed175c" xlink:to="loc_us-gaap_EarningsPerShareDiluted_019e6a4b-7c8c-7cbe-bdeb-28feda0b6df3" xlink:type="arc" order="11"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://chnbrdg.com/role/ConsolidatedStatementsofChangesinStockholdersEquity" xlink:type="simple" xlink:href="chnbrdg-20260630.xsd#ConsolidatedStatementsofChangesinStockholdersEquity"/>
  <link:definitionLink xlink:role="http://chnbrdg.com/role/ConsolidatedStatementsofChangesinStockholdersEquity" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-77e2-b1f8-55b1f89f27bb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_019e6a4b-7c8c-7e96-8809-30caa209301d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-77e2-b1f8-55b1f89f27bb" xlink:to="loc_us-gaap_StatementTable_019e6a4b-7c8c-7e96-8809-30caa209301d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_019e6a4b-7c8c-77ad-836c-487d39c31777" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_019e6a4b-7c8c-7e96-8809-30caa209301d" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_019e6a4b-7c8c-77ad-836c-487d39c31777" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019e6a4b-7c8c-77ad-836c-487d39c31777_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019e6a4b-7c8c-77ad-836c-487d39c31777" xlink:to="loc_us-gaap_EquityComponentDomain_019e6a4b-7c8c-77ad-836c-487d39c31777_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019e6a4b-7c8c-7c8f-9d01-9cdec957f055" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019e6a4b-7c8c-77ad-836c-487d39c31777" xlink:to="loc_us-gaap_EquityComponentDomain_019e6a4b-7c8c-7c8f-9d01-9cdec957f055" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_019e6a4b-7c8c-7025-8176-fc8e8ffc18aa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019e6a4b-7c8c-7c8f-9d01-9cdec957f055" xlink:to="loc_us-gaap_CommonStockMember_019e6a4b-7c8c-7025-8176-fc8e8ffc18aa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_019e6a4b-7c8c-773f-a5b1-2f73bf2a1711" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019e6a4b-7c8c-7c8f-9d01-9cdec957f055" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_019e6a4b-7c8c-773f-a5b1-2f73bf2a1711" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_019e6a4b-7c8c-78f7-81b3-b1ec0f13e138" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019e6a4b-7c8c-7c8f-9d01-9cdec957f055" xlink:to="loc_us-gaap_RetainedEarningsMember_019e6a4b-7c8c-78f7-81b3-b1ec0f13e138" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019e6a4b-7c8c-7ebc-ab83-21386f5da8aa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019e6a4b-7c8c-7c8f-9d01-9cdec957f055" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019e6a4b-7c8c-7ebc-ab83-21386f5da8aa" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_019e6a4b-7c8c-74bb-8043-56b692b3e7ab" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_019e6a4b-7c8c-7e96-8809-30caa209301d" xlink:to="loc_us-gaap_StatementClassOfStockAxis_019e6a4b-7c8c-74bb-8043-56b692b3e7ab" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_019e6a4b-7c8c-74bb-8043-56b692b3e7ab_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_019e6a4b-7c8c-74bb-8043-56b692b3e7ab" xlink:to="loc_us-gaap_ClassOfStockDomain_019e6a4b-7c8c-74bb-8043-56b692b3e7ab_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_019e6a4b-7c8c-7ffd-9a65-10c5aa2b3d33" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_019e6a4b-7c8c-74bb-8043-56b692b3e7ab" xlink:to="loc_us-gaap_ClassOfStockDomain_019e6a4b-7c8c-7ffd-9a65-10c5aa2b3d33" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_019e6a4b-7c8c-7e38-a90d-f4baa9b73e4f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_019e6a4b-7c8c-7ffd-9a65-10c5aa2b3d33" xlink:to="loc_us-gaap_CommonClassAMember_019e6a4b-7c8c-7e38-a90d-f4baa9b73e4f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassBMember_019e6a4b-7c8c-7e8f-b00e-7513bc808afb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonClassBMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_019e6a4b-7c8c-7ffd-9a65-10c5aa2b3d33" xlink:to="loc_us-gaap_CommonClassBMember_019e6a4b-7c8c-7e8f-b00e-7513bc808afb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e6a4b-7c8c-7d41-900a-96a798f1b3bb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-77e2-b1f8-55b1f89f27bb" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e6a4b-7c8c-7d41-900a-96a798f1b3bb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019e6a4b-7c8c-749e-a42b-4081d1da0094" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e6a4b-7c8c-7d41-900a-96a798f1b3bb" xlink:to="loc_us-gaap_StockholdersEquity_019e6a4b-7c8c-749e-a42b-4081d1da0094" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueConversionOfUnits_019e6a4b-7c8c-7b26-a6d0-81e1a9b5c0f1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodValueConversionOfUnits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e6a4b-7c8c-7d41-900a-96a798f1b3bb" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueConversionOfUnits_019e6a4b-7c8c-7b26-a6d0-81e1a9b5c0f1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019e6a4b-7c8c-718b-aa7f-23f6fb40e963" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e6a4b-7c8c-7d41-900a-96a798f1b3bb" xlink:to="loc_us-gaap_NetIncomeLoss_019e6a4b-7c8c-718b-aa7f-23f6fb40e963" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_019e6a4b-7c8c-79ba-9c95-d8ddb27b4cb1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e6a4b-7c8c-7d41-900a-96a798f1b3bb" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_019e6a4b-7c8c-79ba-9c95-d8ddb27b4cb1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019e6a4b-7c8c-7e1e-82d9-7a1eaa55459e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://chnbrdg.com/role/ConsolidatedStatementsofChangesinStockholdersEquityParenthetical" xlink:type="simple" xlink:href="chnbrdg-20260630.xsd#ConsolidatedStatementsofChangesinStockholdersEquityParenthetical"/>
  <link:definitionLink xlink:role="http://chnbrdg.com/role/ConsolidatedStatementsofChangesinStockholdersEquityParenthetical" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-7989-b136-c73b5b7bbe41" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_019e6a4b-7c8c-7ce4-be27-6c2f5ee46777" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-7989-b136-c73b5b7bbe41" xlink:to="loc_us-gaap_StatementTable_019e6a4b-7c8c-7ce4-be27-6c2f5ee46777" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_019e6a4b-7c8c-765c-84cb-39895f4b5a71" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_019e6a4b-7c8c-7ce4-be27-6c2f5ee46777" xlink:to="loc_us-gaap_StatementClassOfStockAxis_019e6a4b-7c8c-765c-84cb-39895f4b5a71" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_019e6a4b-7c8c-765c-84cb-39895f4b5a71_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_019e6a4b-7c8c-765c-84cb-39895f4b5a71" xlink:to="loc_us-gaap_ClassOfStockDomain_019e6a4b-7c8c-765c-84cb-39895f4b5a71_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_019e6a4b-7c8c-7dfc-a23d-d5bf153023b1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_019e6a4b-7c8c-765c-84cb-39895f4b5a71" xlink:to="loc_us-gaap_ClassOfStockDomain_019e6a4b-7c8c-7dfc-a23d-d5bf153023b1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassBMember_019e6a4b-7c8c-74e9-bf7c-7e6501e83f9c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonClassBMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_019e6a4b-7c8c-7dfc-a23d-d5bf153023b1" xlink:to="loc_us-gaap_CommonClassBMember_019e6a4b-7c8c-74e9-bf7c-7e6501e83f9c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_019e6a4b-7c8c-732c-9e86-913c62667180" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_019e6a4b-7c8c-7dfc-a23d-d5bf153023b1" xlink:to="loc_us-gaap_CommonClassAMember_019e6a4b-7c8c-732c-9e86-913c62667180" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConversionOfStockSharesConverted1_019e6a4b-7c8c-79c5-8785-4314ba07d52f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConversionOfStockSharesConverted1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-7989-b136-c73b5b7bbe41" xlink:to="loc_us-gaap_ConversionOfStockSharesConverted1_019e6a4b-7c8c-79c5-8785-4314ba07d52f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConversionOfStockSharesIssued1_019e6a4b-7c8c-7a46-8244-c87629475edd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConversionOfStockSharesIssued1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e6a4b-7c8c-7989-b136-c73b5b7bbe41" xlink:to="loc_us-gaap_ConversionOfStockSharesIssued1_019e6a4b-7c8c-7a46-8244-c87629475edd" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://chnbrdg.com/role/SecuritiesAllowanceforSecuritiesCreditLossesScheduleofAmortizedCostandFairValueDetails" xlink:type="simple" xlink:href="chnbrdg-20260630.xsd#SecuritiesAllowanceforSecuritiesCreditLossesScheduleofAmortizedCostandFairValueDetails"/>
  <link:definitionLink xlink:role="http://chnbrdg.com/role/SecuritiesAllowanceforSecuritiesCreditLossesScheduleofAmortizedCostandFairValueDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems_019e6a4b-7c8c-76c5-b484-762de9fe6123" xlink:href="chnbrdg-20260630.xsd#chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesTable_019e6a4b-7c8c-7cb1-8e60-ac68cca79f38" xlink:href="chnbrdg-20260630.xsd#chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems_019e6a4b-7c8c-76c5-b484-762de9fe6123" xlink:to="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesTable_019e6a4b-7c8c-7cb1-8e60-ac68cca79f38" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_019e6a4b-7c8c-72ac-a92c-465552a61ba8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesTable_019e6a4b-7c8c-7cb1-8e60-ac68cca79f38" xlink:to="loc_us-gaap_FinancialInstrumentAxis_019e6a4b-7c8c-72ac-a92c-465552a61ba8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-72ac-a92c-465552a61ba8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_019e6a4b-7c8c-72ac-a92c-465552a61ba8" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-72ac-a92c-465552a61ba8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-73c7-bc78-c997836b123f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_019e6a4b-7c8c-72ac-a92c-465552a61ba8" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-73c7-bc78-c997836b123f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_019e6a4b-7c8c-7bc7-8216-6977761f0b69" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_USGovernmentAgenciesDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-73c7-bc78-c997836b123f" xlink:to="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_019e6a4b-7c8c-7bc7-8216-6977761f0b69" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_019e6a4b-7c8c-73a2-bd07-6cbd2ac1302d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-73c7-bc78-c997836b123f" xlink:to="loc_us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_019e6a4b-7c8c-73a2-bd07-6cbd2ac1302d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateBondSecuritiesMember_019e6a4b-7c8c-769a-94ec-9b9b07a118e9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CorporateBondSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-73c7-bc78-c997836b123f" xlink:to="loc_us-gaap_CorporateBondSecuritiesMember_019e6a4b-7c8c-769a-94ec-9b9b07a118e9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_019e6a4b-7c8c-7747-af51-2f6e370ed891" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_USStatesAndPoliticalSubdivisionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-73c7-bc78-c997836b123f" xlink:to="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_019e6a4b-7c8c-7747-af51-2f6e370ed891" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesAbstract_019e6a4b-7c8c-79df-9791-d47bdd2449f9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems_019e6a4b-7c8c-76c5-b484-762de9fe6123" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesAbstract_019e6a4b-7c8c-79df-9791-d47bdd2449f9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss_019e6a4b-7c8c-74c4-b44a-4cbf1f7a27c2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesAbstract_019e6a4b-7c8c-79df-9791-d47bdd2449f9" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss_019e6a4b-7c8c-74c4-b44a-4cbf1f7a27c2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_019e6a4b-7c8c-7f57-b60c-a5fc5d242f7f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesAbstract_019e6a4b-7c8c-79df-9791-d47bdd2449f9" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_019e6a4b-7c8c-7f57-b60c-a5fc5d242f7f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_019e6a4b-7c8c-7426-bc3e-5f453568f71c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesAbstract_019e6a4b-7c8c-79df-9791-d47bdd2449f9" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_019e6a4b-7c8c-7426-bc3e-5f453568f71c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_019e6a4b-7c8c-7a7e-abdb-0c24d9626f3c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesAbstract_019e6a4b-7c8c-79df-9791-d47bdd2449f9" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_019e6a4b-7c8c-7a7e-abdb-0c24d9626f3c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest_019e6a4b-7c8c-7a86-8c67-d1c6434a6b32" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesAbstract_019e6a4b-7c8c-79df-9791-d47bdd2449f9" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest_019e6a4b-7c8c-7a86-8c67-d1c6434a6b32" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesClassifiedAbstract_019e6a4b-7c8c-7a6a-b09a-653ca0aa4fc2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HeldToMaturitySecuritiesClassifiedAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems_019e6a4b-7c8c-76c5-b484-762de9fe6123" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesClassifiedAbstract_019e6a4b-7c8c-7a6a-b09a-653ca0aa4fc2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss_019e6a4b-7c8c-7b1d-ad5d-3eea66b0380c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesClassifiedAbstract_019e6a4b-7c8c-7a6a-b09a-653ca0aa4fc2" xlink:to="loc_us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss_019e6a4b-7c8c-7b1d-ad5d-3eea66b0380c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain_019e6a4b-7c8c-7976-800f-251c45c144f9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesClassifiedAbstract_019e6a4b-7c8c-7a6a-b09a-653ca0aa4fc2" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain_019e6a4b-7c8c-7976-800f-251c45c144f9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss_019e6a4b-7c8c-7e67-b769-9a05952dafa0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesClassifiedAbstract_019e6a4b-7c8c-7a6a-b09a-653ca0aa4fc2" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss_019e6a4b-7c8c-7e67-b769-9a05952dafa0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesFairValue_019e6a4b-7c8c-7593-a1e1-e810aab50a09" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HeldToMaturitySecuritiesFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesClassifiedAbstract_019e6a4b-7c8c-7a6a-b09a-653ca0aa4fc2" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesFairValue_019e6a4b-7c8c-7593-a1e1-e810aab50a09" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest_019e6a4b-7c8c-7b00-8de7-80bac933c3d9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesClassifiedAbstract_019e6a4b-7c8c-7a6a-b09a-653ca0aa4fc2" xlink:to="loc_us-gaap_DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest_019e6a4b-7c8c-7b00-8de7-80bac933c3d9" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_DebtSecuritiesAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss_019e6a4b-7c8c-786e-be6b-93fbe50b9ca8" xlink:href="chnbrdg-20260630.xsd#chnbrdg_DebtSecuritiesAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems_019e6a4b-7c8c-76c5-b484-762de9fe6123" xlink:to="loc_chnbrdg_DebtSecuritiesAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss_019e6a4b-7c8c-786e-be6b-93fbe50b9ca8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_DebtSecuritiesAccumulatedUnrecognizedGainBeforeTax_019e6a4b-7c8c-77d5-a2a1-831a69b1966d" xlink:href="chnbrdg-20260630.xsd#chnbrdg_DebtSecuritiesAccumulatedUnrecognizedGainBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems_019e6a4b-7c8c-76c5-b484-762de9fe6123" xlink:to="loc_chnbrdg_DebtSecuritiesAccumulatedUnrecognizedGainBeforeTax_019e6a4b-7c8c-77d5-a2a1-831a69b1966d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_DebtSecuritiesAccumulatedUnrecognizedLossBeforeTax_019e6a4b-7c8c-702b-9be5-405a90a69ad4" xlink:href="chnbrdg-20260630.xsd#chnbrdg_DebtSecuritiesAccumulatedUnrecognizedLossBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems_019e6a4b-7c8c-76c5-b484-762de9fe6123" xlink:to="loc_chnbrdg_DebtSecuritiesAccumulatedUnrecognizedLossBeforeTax_019e6a4b-7c8c-702b-9be5-405a90a69ad4" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecurities_019e6a4b-7c8c-7b97-abb4-8fce7fa2b720" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems_019e6a4b-7c8c-76c5-b484-762de9fe6123" xlink:to="loc_us-gaap_DebtSecurities_019e6a4b-7c8c-7b97-abb4-8fce7fa2b720" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_DebtSecuritiesAllowanceForCreditLossesExcludingAccruedInterest_019e6a4b-7c8c-744a-b79f-9e61300620ea" xlink:href="chnbrdg-20260630.xsd#chnbrdg_DebtSecuritiesAllowanceForCreditLossesExcludingAccruedInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems_019e6a4b-7c8c-76c5-b484-762de9fe6123" xlink:to="loc_chnbrdg_DebtSecuritiesAllowanceForCreditLossesExcludingAccruedInterest_019e6a4b-7c8c-744a-b79f-9e61300620ea" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://chnbrdg.com/role/SecuritiesAllowanceforSecuritiesCreditLossesNarrativeDetails" xlink:type="simple" xlink:href="chnbrdg-20260630.xsd#SecuritiesAllowanceforSecuritiesCreditLossesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://chnbrdg.com/role/SecuritiesAllowanceforSecuritiesCreditLossesNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems_019e6a4b-7c8c-7a2c-ac45-8636e76e3781" xlink:href="chnbrdg-20260630.xsd#chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesTable_019e6a4b-7c8c-71d2-97e5-145333d1d371" xlink:href="chnbrdg-20260630.xsd#chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems_019e6a4b-7c8c-7a2c-ac45-8636e76e3781" xlink:to="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesTable_019e6a4b-7c8c-71d2-97e5-145333d1d371" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_019e6a4b-7c8c-7fcd-87e1-e08294d0ca66" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesTable_019e6a4b-7c8c-71d2-97e5-145333d1d371" xlink:to="loc_us-gaap_FinancialInstrumentAxis_019e6a4b-7c8c-7fcd-87e1-e08294d0ca66" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-7fcd-87e1-e08294d0ca66_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_019e6a4b-7c8c-7fcd-87e1-e08294d0ca66" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-7fcd-87e1-e08294d0ca66_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-7592-a696-3e0ad50b488a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_019e6a4b-7c8c-7fcd-87e1-e08294d0ca66" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-7592-a696-3e0ad50b488a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_019e6a4b-7c8c-7e9f-9ca4-ccc8a47dcc1e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_USGovernmentAgenciesDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-7592-a696-3e0ad50b488a" xlink:to="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_019e6a4b-7c8c-7e9f-9ca4-ccc8a47dcc1e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_019e6a4b-7c8c-7e0a-a6d1-bbb5f41c84ca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-7592-a696-3e0ad50b488a" xlink:to="loc_us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_019e6a4b-7c8c-7e0a-a6d1-bbb5f41c84ca" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateBondSecuritiesMember_019e6a4b-7c8c-701f-bf88-0d369efa0d42" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CorporateBondSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-7592-a696-3e0ad50b488a" xlink:to="loc_us-gaap_CorporateBondSecuritiesMember_019e6a4b-7c8c-701f-bf88-0d369efa0d42" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_019e6a4b-7c8c-748e-a6cd-1814fbc5de85" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_USStatesAndPoliticalSubdivisionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-7592-a696-3e0ad50b488a" xlink:to="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_019e6a4b-7c8c-748e-a6cd-1814fbc5de85" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuritiesLoanedFairValueOfCollateral_019e6a4b-7c8c-740d-9bea-e38e92859354" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SecuritiesLoanedFairValueOfCollateral"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems_019e6a4b-7c8c-7a2c-ac45-8636e76e3781" xlink:to="loc_us-gaap_SecuritiesLoanedFairValueOfCollateral_019e6a4b-7c8c-740d-9bea-e38e92859354" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities_019e6a4b-7c8c-7ffe-8c84-2647bed53029" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems_019e6a4b-7c8c-7a2c-ac45-8636e76e3781" xlink:to="loc_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities_019e6a4b-7c8c-7ffe-8c84-2647bed53029" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities_019e6a4b-7c8c-7c11-a44b-2a17df1f97dd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems_019e6a4b-7c8c-7a2c-ac45-8636e76e3781" xlink:to="loc_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities_019e6a4b-7c8c-7c11-a44b-2a17df1f97dd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsDebtSecuritiesAvailableForSalePreviouslyWrittenOffRecovery_019e6a4b-7c8c-7661-9317-6a251c628d1c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsDebtSecuritiesAvailableForSalePreviouslyWrittenOffRecovery"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems_019e6a4b-7c8c-7a2c-ac45-8636e76e3781" xlink:to="loc_us-gaap_ProceedsDebtSecuritiesAvailableForSalePreviouslyWrittenOffRecovery_019e6a4b-7c8c-7661-9317-6a251c628d1c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_NumberOfHeldToMaturityBondsSold_019e6a4b-7c8c-7f27-9112-39bb19c637ec" xlink:href="chnbrdg-20260630.xsd#chnbrdg_NumberOfHeldToMaturityBondsSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems_019e6a4b-7c8c-7a2c-ac45-8636e76e3781" xlink:to="loc_chnbrdg_NumberOfHeldToMaturityBondsSold_019e6a4b-7c8c-7f27-9112-39bb19c637ec" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions_019e6a4b-7c8c-7f50-aab5-e54ccc241df6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems_019e6a4b-7c8c-7a2c-ac45-8636e76e3781" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions_019e6a4b-7c8c-7f50-aab5-e54ccc241df6" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_DebtSecuritiesAvailableForSaleNumberOfSecurities_019e6a4b-7c8c-753c-a215-4af97c933aa7" xlink:href="chnbrdg-20260630.xsd#chnbrdg_DebtSecuritiesAvailableForSaleNumberOfSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems_019e6a4b-7c8c-7a2c-ac45-8636e76e3781" xlink:to="loc_chnbrdg_DebtSecuritiesAvailableForSaleNumberOfSecurities_019e6a4b-7c8c-753c-a215-4af97c933aa7" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_DebtSecuritiesHeldToMaturityUnrealizedLossPositionNumberOfPositions_019e6a4b-7c8c-7efe-8340-e334fd52ac71" xlink:href="chnbrdg-20260630.xsd#chnbrdg_DebtSecuritiesHeldToMaturityUnrealizedLossPositionNumberOfPositions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems_019e6a4b-7c8c-7a2c-ac45-8636e76e3781" xlink:to="loc_chnbrdg_DebtSecuritiesHeldToMaturityUnrealizedLossPositionNumberOfPositions_019e6a4b-7c8c-7efe-8340-e334fd52ac71" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_AvailableForSaleSecuritiesUnrealizedLossPositionAggregateImpairmentPercentage_019e6a4b-7c8c-7e2d-afe9-d5250791d5a4" xlink:href="chnbrdg-20260630.xsd#chnbrdg_AvailableForSaleSecuritiesUnrealizedLossPositionAggregateImpairmentPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems_019e6a4b-7c8c-7a2c-ac45-8636e76e3781" xlink:to="loc_chnbrdg_AvailableForSaleSecuritiesUnrealizedLossPositionAggregateImpairmentPercentage_019e6a4b-7c8c-7e2d-afe9-d5250791d5a4" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_HeldToMaturitySecuritiesUnrealizedLossPositionAggregateImpairmentPercentage_019e6a4b-7c8c-7e31-bb72-3d668859c265" xlink:href="chnbrdg-20260630.xsd#chnbrdg_HeldToMaturitySecuritiesUnrealizedLossPositionAggregateImpairmentPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems_019e6a4b-7c8c-7a2c-ac45-8636e76e3781" xlink:to="loc_chnbrdg_HeldToMaturitySecuritiesUnrealizedLossPositionAggregateImpairmentPercentage_019e6a4b-7c8c-7e31-bb72-3d668859c265" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest_019e6a4b-7c8c-7a07-8400-a29414ffe2e8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems_019e6a4b-7c8c-7a2c-ac45-8636e76e3781" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest_019e6a4b-7c8c-7a07-8400-a29414ffe2e8" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestNonaccrual_019e6a4b-7c8c-7299-8a55-2006a2b7d856" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestNonaccrual"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems_019e6a4b-7c8c-7a2c-ac45-8636e76e3781" xlink:to="loc_us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestNonaccrual_019e6a4b-7c8c-7299-8a55-2006a2b7d856" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNiUnrealizedGainLoss_019e6a4b-7c8c-743b-86c6-6769d17cbe8e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquitySecuritiesFvNiUnrealizedGainLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems_019e6a4b-7c8c-7a2c-ac45-8636e76e3781" xlink:to="loc_us-gaap_EquitySecuritiesFvNiUnrealizedGainLoss_019e6a4b-7c8c-743b-86c6-6769d17cbe8e" xlink:type="arc" order="12"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://chnbrdg.com/role/SecuritiesAllowanceforSecuritiesCreditLossesUnrealizedLossPositionDetails" xlink:type="simple" xlink:href="chnbrdg-20260630.xsd#SecuritiesAllowanceforSecuritiesCreditLossesUnrealizedLossPositionDetails"/>
  <link:definitionLink xlink:role="http://chnbrdg.com/role/SecuritiesAllowanceforSecuritiesCreditLossesUnrealizedLossPositionDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems_019e6a4b-7c8c-7593-8c1e-fe80eee119fa" xlink:href="chnbrdg-20260630.xsd#chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesTable_019e6a4b-7c8c-7c4d-8f1d-fa998e84b6ca" xlink:href="chnbrdg-20260630.xsd#chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems_019e6a4b-7c8c-7593-8c1e-fe80eee119fa" xlink:to="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesTable_019e6a4b-7c8c-7c4d-8f1d-fa998e84b6ca" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_019e6a4b-7c8c-7240-9523-810f8df007a3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesTable_019e6a4b-7c8c-7c4d-8f1d-fa998e84b6ca" xlink:to="loc_us-gaap_FinancialInstrumentAxis_019e6a4b-7c8c-7240-9523-810f8df007a3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-7240-9523-810f8df007a3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_019e6a4b-7c8c-7240-9523-810f8df007a3" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-7240-9523-810f8df007a3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-7d23-8615-9ae840d90401" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_019e6a4b-7c8c-7240-9523-810f8df007a3" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-7d23-8615-9ae840d90401" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_019e6a4b-7c8c-7648-811b-6ca56bd8dd5b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_USGovernmentAgenciesDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-7d23-8615-9ae840d90401" xlink:to="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_019e6a4b-7c8c-7648-811b-6ca56bd8dd5b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_019e6a4b-7c8c-77fa-a957-0d8ffdf0003a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-7d23-8615-9ae840d90401" xlink:to="loc_us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_019e6a4b-7c8c-77fa-a957-0d8ffdf0003a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateBondSecuritiesMember_019e6a4b-7c8c-71f6-b091-6adb8a1e947e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CorporateBondSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-7d23-8615-9ae840d90401" xlink:to="loc_us-gaap_CorporateBondSecuritiesMember_019e6a4b-7c8c-71f6-b091-6adb8a1e947e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_019e6a4b-7c8c-7419-b107-20fdbcf6368c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_USStatesAndPoliticalSubdivisionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-7d23-8615-9ae840d90401" xlink:to="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_019e6a4b-7c8c-7419-b107-20fdbcf6368c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss_019e6a4b-7c8c-7ab3-ac44-7e350c4a4319" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems_019e6a4b-7c8c-7593-8c1e-fe80eee119fa" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss_019e6a4b-7c8c-7ab3-ac44-7e350c4a4319" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months_019e6a4b-7c8c-702b-965f-9d10bb478e27" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems_019e6a4b-7c8c-7593-8c1e-fe80eee119fa" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months_019e6a4b-7c8c-702b-965f-9d10bb478e27" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_019e6a4b-7c8c-7f24-b9c9-d823ac99199f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems_019e6a4b-7c8c-7593-8c1e-fe80eee119fa" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_019e6a4b-7c8c-7f24-b9c9-d823ac99199f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger_019e6a4b-7c8c-7b02-a334-3b28baada650" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems_019e6a4b-7c8c-7593-8c1e-fe80eee119fa" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger_019e6a4b-7c8c-7b02-a334-3b28baada650" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss_019e6a4b-7c8c-7548-8aaa-a9a6f0cdc337" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems_019e6a4b-7c8c-7593-8c1e-fe80eee119fa" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss_019e6a4b-7c8c-7548-8aaa-a9a6f0cdc337" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition_019e6a4b-7c8c-7658-8a19-c038b3f47ed5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_chnbrdg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesLineItems_019e6a4b-7c8c-7593-8c1e-fe80eee119fa" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition_019e6a4b-7c8c-7658-8a19-c038b3f47ed5" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://chnbrdg.com/role/SecuritiesAllowanceforSecuritiesCreditLossesScheduleofDebtSecuritiesHeldtoMaturityCreditQualityIndicatorDetails" xlink:type="simple" xlink:href="chnbrdg-20260630.xsd#SecuritiesAllowanceforSecuritiesCreditLossesScheduleofDebtSecuritiesHeldtoMaturityCreditQualityIndicatorDetails"/>
  <link:definitionLink xlink:role="http://chnbrdg.com/role/SecuritiesAllowanceforSecuritiesCreditLossesScheduleofDebtSecuritiesHeldtoMaturityCreditQualityIndicatorDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesHeldtomaturityAllowanceForCreditLossLineItems_019e6a4b-7c8c-7837-99e6-e04d5a4786ab" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesHeldtomaturityAllowanceForCreditLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesHeldToMaturityAllowanceForCreditLossTable_019e6a4b-7c8c-75ad-9952-f7775f2c3a59" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesHeldToMaturityAllowanceForCreditLossTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtSecuritiesHeldtomaturityAllowanceForCreditLossLineItems_019e6a4b-7c8c-7837-99e6-e04d5a4786ab" xlink:to="loc_us-gaap_DebtSecuritiesHeldToMaturityAllowanceForCreditLossTable_019e6a4b-7c8c-75ad-9952-f7775f2c3a59" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CreditRatingFitchAxis_019e6a4b-7c8c-73c3-bfeb-7dd5818ccae2" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_CreditRatingFitchAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtSecuritiesHeldToMaturityAllowanceForCreditLossTable_019e6a4b-7c8c-75ad-9952-f7775f2c3a59" xlink:to="loc_srt_CreditRatingFitchAxis_019e6a4b-7c8c-73c3-bfeb-7dd5818ccae2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ExternalCreditRatingFitchMember_019e6a4b-7c8c-73c3-bfeb-7dd5818ccae2_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ExternalCreditRatingFitchMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CreditRatingFitchAxis_019e6a4b-7c8c-73c3-bfeb-7dd5818ccae2" xlink:to="loc_srt_ExternalCreditRatingFitchMember_019e6a4b-7c8c-73c3-bfeb-7dd5818ccae2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ExternalCreditRatingFitchMember_019e6a4b-7c8c-725f-8ad1-94651bd28e3c" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ExternalCreditRatingFitchMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CreditRatingFitchAxis_019e6a4b-7c8c-73c3-bfeb-7dd5818ccae2" xlink:to="loc_srt_ExternalCreditRatingFitchMember_019e6a4b-7c8c-725f-8ad1-94651bd28e3c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_AAAAAAMember_019e6a4b-7c8c-742b-8a48-a9ec51f3854c" xlink:href="chnbrdg-20260630.xsd#chnbrdg_AAAAAAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ExternalCreditRatingFitchMember_019e6a4b-7c8c-725f-8ad1-94651bd28e3c" xlink:to="loc_chnbrdg_AAAAAAMember_019e6a4b-7c8c-742b-8a48-a9ec51f3854c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_BBBBBBMember_019e6a4b-7c8c-770d-ba4f-98865fc6103f" xlink:href="chnbrdg-20260630.xsd#chnbrdg_BBBBBBMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ExternalCreditRatingFitchMember_019e6a4b-7c8c-725f-8ad1-94651bd28e3c" xlink:to="loc_chnbrdg_BBBBBBMember_019e6a4b-7c8c-770d-ba4f-98865fc6103f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_019e6a4b-7c8c-7e94-b5cf-2425510e186a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtSecuritiesHeldToMaturityAllowanceForCreditLossTable_019e6a4b-7c8c-75ad-9952-f7775f2c3a59" xlink:to="loc_us-gaap_FinancialInstrumentAxis_019e6a4b-7c8c-7e94-b5cf-2425510e186a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-7e94-b5cf-2425510e186a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_019e6a4b-7c8c-7e94-b5cf-2425510e186a" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-7e94-b5cf-2425510e186a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-798b-a040-31e5e2755531" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_019e6a4b-7c8c-7e94-b5cf-2425510e186a" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-798b-a040-31e5e2755531" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_019e6a4b-7c8c-7994-a53d-386420d93dd4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_USGovernmentAgenciesDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-798b-a040-31e5e2755531" xlink:to="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_019e6a4b-7c8c-7994-a53d-386420d93dd4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MortgageBackedSecuritiesMember_019e6a4b-7c8c-7579-95c5-e132340c8645" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MortgageBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-798b-a040-31e5e2755531" xlink:to="loc_us-gaap_MortgageBackedSecuritiesMember_019e6a4b-7c8c-7579-95c5-e132340c8645" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateBondSecuritiesMember_019e6a4b-7c8c-7f89-8d6e-1b1f1575b811" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CorporateBondSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-798b-a040-31e5e2755531" xlink:to="loc_us-gaap_CorporateBondSecuritiesMember_019e6a4b-7c8c-7f89-8d6e-1b1f1575b811" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_019e6a4b-7c8c-7f59-ad3b-a33bb50b9d5f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_USStatesAndPoliticalSubdivisionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-798b-a040-31e5e2755531" xlink:to="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_019e6a4b-7c8c-7f59-ad3b-a33bb50b9d5f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss_019e6a4b-7c8c-7221-a893-37a955b30683" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtSecuritiesHeldtomaturityAllowanceForCreditLossLineItems_019e6a4b-7c8c-7837-99e6-e04d5a4786ab" xlink:to="loc_us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss_019e6a4b-7c8c-7221-a893-37a955b30683" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://chnbrdg.com/role/SecuritiesAllowanceforSecuritiesCreditLossesScheduleofAmortizedCostofHTMDebtSecuritiesDetails" xlink:type="simple" xlink:href="chnbrdg-20260630.xsd#SecuritiesAllowanceforSecuritiesCreditLossesScheduleofAmortizedCostofHTMDebtSecuritiesDetails"/>
  <link:definitionLink xlink:role="http://chnbrdg.com/role/SecuritiesAllowanceforSecuritiesCreditLossesScheduleofAmortizedCostofHTMDebtSecuritiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesHeldtomaturityAllowanceForCreditLossLineItems_019e6a4b-7c8c-791c-87c2-89745148b2d3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesHeldtomaturityAllowanceForCreditLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesHeldToMaturityAllowanceForCreditLossTable_019e6a4b-7c8c-7781-87e6-5218885de9ba" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesHeldToMaturityAllowanceForCreditLossTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtSecuritiesHeldtomaturityAllowanceForCreditLossLineItems_019e6a4b-7c8c-791c-87c2-89745148b2d3" xlink:to="loc_us-gaap_DebtSecuritiesHeldToMaturityAllowanceForCreditLossTable_019e6a4b-7c8c-7781-87e6-5218885de9ba" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_019e6a4b-7c8c-7e64-8a79-e4fb8af639d6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtSecuritiesHeldToMaturityAllowanceForCreditLossTable_019e6a4b-7c8c-7781-87e6-5218885de9ba" xlink:to="loc_us-gaap_FinancialInstrumentAxis_019e6a4b-7c8c-7e64-8a79-e4fb8af639d6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-7e64-8a79-e4fb8af639d6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_019e6a4b-7c8c-7e64-8a79-e4fb8af639d6" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-7e64-8a79-e4fb8af639d6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-7bf3-a2c4-e1007b20f686" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_019e6a4b-7c8c-7e64-8a79-e4fb8af639d6" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-7bf3-a2c4-e1007b20f686" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_019e6a4b-7c8c-7b9c-bed7-619c14518576" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_USGovernmentAgenciesDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-7bf3-a2c4-e1007b20f686" xlink:to="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_019e6a4b-7c8c-7b9c-bed7-619c14518576" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MortgageBackedSecuritiesMember_019e6a4b-7c8c-749c-8224-13c79a7ce21b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MortgageBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-7bf3-a2c4-e1007b20f686" xlink:to="loc_us-gaap_MortgageBackedSecuritiesMember_019e6a4b-7c8c-749c-8224-13c79a7ce21b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateBondSecuritiesMember_019e6a4b-7c8c-714b-9bf3-17b1768d8bbc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CorporateBondSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-7bf3-a2c4-e1007b20f686" xlink:to="loc_us-gaap_CorporateBondSecuritiesMember_019e6a4b-7c8c-714b-9bf3-17b1768d8bbc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_019e6a4b-7c8c-76e6-bb15-dcbe26145afe" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_USStatesAndPoliticalSubdivisionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7c8c-7bf3-a2c4-e1007b20f686" xlink:to="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_019e6a4b-7c8c-76e6-bb15-dcbe26145afe" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesHeldToMaturityAllowanceForCreditLossRollForward_019e6a4b-7c8c-7cb3-b5cb-480d3142657c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesHeldToMaturityAllowanceForCreditLossRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtSecuritiesHeldtomaturityAllowanceForCreditLossLineItems_019e6a4b-7c8c-791c-87c2-89745148b2d3" xlink:to="loc_us-gaap_DebtSecuritiesHeldToMaturityAllowanceForCreditLossRollForward_019e6a4b-7c8c-7cb3-b5cb-480d3142657c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest_019e6a4b-7c8c-783b-a484-b263bd966b59" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtSecuritiesHeldToMaturityAllowanceForCreditLossRollForward_019e6a4b-7c8c-7cb3-b5cb-480d3142657c" xlink:to="loc_us-gaap_DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest_019e6a4b-7c8c-783b-a484-b263bd966b59" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestCreditLossExpenseReversal_019e6a4b-7c8c-7cad-a495-633344534460" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestCreditLossExpenseReversal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtSecuritiesHeldToMaturityAllowanceForCreditLossRollForward_019e6a4b-7c8c-7cb3-b5cb-480d3142657c" xlink:to="loc_us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestCreditLossExpenseReversal_019e6a4b-7c8c-7cad-a495-633344534460" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestAllowanceForCreditLossWriteoff_019e6a4b-7c8c-7860-b3d1-02acbc6a5a24" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestAllowanceForCreditLossWriteoff"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtSecuritiesHeldToMaturityAllowanceForCreditLossRollForward_019e6a4b-7c8c-7cb3-b5cb-480d3142657c" xlink:to="loc_us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestAllowanceForCreditLossWriteoff_019e6a4b-7c8c-7860-b3d1-02acbc6a5a24" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestAllowanceForCreditLossRecovery_019e6a4b-7c8c-7e22-8ab8-17a1fff6709d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestAllowanceForCreditLossRecovery"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtSecuritiesHeldToMaturityAllowanceForCreditLossRollForward_019e6a4b-7c8c-7cb3-b5cb-480d3142657c" xlink:to="loc_us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestAllowanceForCreditLossRecovery_019e6a4b-7c8c-7e22-8ab8-17a1fff6709d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest_019e6a4b-7c8c-7aba-825a-0ebedd294c05" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://chnbrdg.com/role/LoansandAllowanceforLoanCreditLossesScheduleofCompositionoftheLoanPortfolioDetails" xlink:type="simple" xlink:href="chnbrdg-20260630.xsd#LoansandAllowanceforLoanCreditLossesScheduleofCompositionoftheLoanPortfolioDetails"/>
  <link:definitionLink xlink:role="http://chnbrdg.com/role/LoansandAllowanceforLoanCreditLossesScheduleofCompositionoftheLoanPortfolioDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_019e6a4b-7c8c-785d-9d13-c90bdc5bdf81" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_019e6a4b-7c8c-7566-a683-ab1230f035e0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_019e6a4b-7c8c-785d-9d13-c90bdc5bdf81" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_019e6a4b-7c8c-7566-a683-ab1230f035e0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_019e6a4b-7c8c-722c-9b4c-729c70e87fd5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_019e6a4b-7c8c-7566-a683-ab1230f035e0" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_019e6a4b-7c8c-722c-9b4c-729c70e87fd5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019e6a4b-7c8c-722c-9b4c-729c70e87fd5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_019e6a4b-7c8c-722c-9b4c-729c70e87fd5" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019e6a4b-7c8c-722c-9b4c-729c70e87fd5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019e6a4b-7c8c-74db-bbb9-78a4ba2b226e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_019e6a4b-7c8c-722c-9b4c-729c70e87fd5" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019e6a4b-7c8c-74db-bbb9-78a4ba2b226e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialRealEstatePortfolioSegmentMember_019e6a4b-7c8c-7973-b65e-aa8386730e7b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommercialRealEstatePortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019e6a4b-7c8c-74db-bbb9-78a4ba2b226e" xlink:to="loc_us-gaap_CommercialRealEstatePortfolioSegmentMember_019e6a4b-7c8c-7973-b65e-aa8386730e7b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPortfolioSegmentMember_019e6a4b-7c8c-736e-b051-18800bba0798" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommercialPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019e6a4b-7c8c-74db-bbb9-78a4ba2b226e" xlink:to="loc_us-gaap_CommercialPortfolioSegmentMember_019e6a4b-7c8c-736e-b051-18800bba0798" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialPortfolioSegmentMember_019e6a4b-7c8c-71ed-ad4d-72d5b26be209" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ResidentialPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019e6a4b-7c8c-74db-bbb9-78a4ba2b226e" xlink:to="loc_us-gaap_ResidentialPortfolioSegmentMember_019e6a4b-7c8c-71ed-ad4d-72d5b26be209" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_OtherConsumerPortfolioSegmentMember_019e6a4b-7c8c-7ffd-b36d-626d3486de6f" xlink:href="chnbrdg-20260630.xsd#chnbrdg_OtherConsumerPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019e6a4b-7c8c-74db-bbb9-78a4ba2b226e" xlink:to="loc_chnbrdg_OtherConsumerPortfolioSegmentMember_019e6a4b-7c8c-7ffd-b36d-626d3486de6f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss_019e6a4b-7c8c-71c8-adc4-8431717925f4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_019e6a4b-7c8c-785d-9d13-c90bdc5bdf81" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss_019e6a4b-7c8c-71c8-adc4-8431717925f4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest_019e6a4b-7c8c-72ac-a00a-1be8c843874f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_019e6a4b-7c8c-785d-9d13-c90bdc5bdf81" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest_019e6a4b-7c8c-72ac-a00a-1be8c843874f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss_019e6a4b-7c8c-7721-8d08-6992bcabf267" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_019e6a4b-7c8c-785d-9d13-c90bdc5bdf81" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss_019e6a4b-7c8c-7721-8d08-6992bcabf267" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://chnbrdg.com/role/LoansandAllowanceforLoanCreditLossesNarrativeDetails" xlink:type="simple" xlink:href="chnbrdg-20260630.xsd#LoansandAllowanceforLoanCreditLossesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://chnbrdg.com/role/LoansandAllowanceforLoanCreditLossesNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_019e6a4b-7c8c-7e9b-b081-2ff900df45c8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_019e6a4b-7c8c-7023-9bfc-81396b8a9b66" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_019e6a4b-7c8c-7e9b-b081-2ff900df45c8" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_019e6a4b-7c8c-7023-9bfc-81396b8a9b66" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e6a4b-7c8c-75c9-b715-bcde3011af74" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_019e6a4b-7c8c-7023-9bfc-81396b8a9b66" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e6a4b-7c8c-75c9-b715-bcde3011af74" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_019e6a4b-7c8c-75c9-b715-bcde3011af74_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e6a4b-7c8c-75c9-b715-bcde3011af74" xlink:to="loc_us-gaap_RelatedPartyDomain_019e6a4b-7c8c-75c9-b715-bcde3011af74_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_019e6a4b-7c8c-7a43-9cae-e87346f3882e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e6a4b-7c8c-75c9-b715-bcde3011af74" xlink:to="loc_us-gaap_RelatedPartyDomain_019e6a4b-7c8c-7a43-9cae-e87346f3882e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_AffiliatedEntityMember_019e6a4b-7c8c-79fa-9bad-34098710cc98" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_AffiliatedEntityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_019e6a4b-7c8c-7a43-9cae-e87346f3882e" xlink:to="loc_srt_AffiliatedEntityMember_019e6a4b-7c8c-79fa-9bad-34098710cc98" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepositLiabilitiesReclassifiedAsLoansReceivable1_019e6a4b-7c8c-7445-84dd-3aa817167282" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepositLiabilitiesReclassifiedAsLoansReceivable1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_019e6a4b-7c8c-7e9b-b081-2ff900df45c8" xlink:to="loc_us-gaap_DepositLiabilitiesReclassifiedAsLoansReceivable1_019e6a4b-7c8c-7445-84dd-3aa817167282" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableUnamortizedLoanFeeCost_019e6a4b-7c8c-783e-be34-245c4801fecd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableUnamortizedLoanFeeCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_019e6a4b-7c8c-7e9b-b081-2ff900df45c8" xlink:to="loc_us-gaap_FinancingReceivableUnamortizedLoanFeeCost_019e6a4b-7c8c-783e-be34-245c4801fecd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss_019e6a4b-7c8c-785e-8fb5-651fc204b21e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_019e6a4b-7c8c-7e9b-b081-2ff900df45c8" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss_019e6a4b-7c8c-785e-8fb5-651fc204b21e" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://chnbrdg.com/role/LoansandAllowanceforLoanCreditLossesScheduleofAllowanceforCreditLossesbyPortfolioTypeDetails" xlink:type="simple" xlink:href="chnbrdg-20260630.xsd#LoansandAllowanceforLoanCreditLossesScheduleofAllowanceforCreditLossesbyPortfolioTypeDetails"/>
  <link:definitionLink xlink:role="http://chnbrdg.com/role/LoansandAllowanceforLoanCreditLossesScheduleofAllowanceforCreditLossesbyPortfolioTypeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_019e6a4b-7c8c-726b-9a23-124de2e7edb4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_019e6a4b-7c8c-7cda-aff3-16155d4c892c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_019e6a4b-7c8c-726b-9a23-124de2e7edb4" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_019e6a4b-7c8c-7cda-aff3-16155d4c892c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_019e6a4b-7c8c-76fb-9fb1-42f12ebfabcc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_019e6a4b-7c8c-7cda-aff3-16155d4c892c" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_019e6a4b-7c8c-76fb-9fb1-42f12ebfabcc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019e6a4b-7c8c-76fb-9fb1-42f12ebfabcc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_019e6a4b-7c8c-76fb-9fb1-42f12ebfabcc" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019e6a4b-7c8c-76fb-9fb1-42f12ebfabcc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019e6a4b-7c8c-7ee5-9889-66f0d69f4e41" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_019e6a4b-7c8c-76fb-9fb1-42f12ebfabcc" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019e6a4b-7c8c-7ee5-9889-66f0d69f4e41" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialRealEstatePortfolioSegmentMember_019e6a4b-7c8c-76da-83b3-ce1278f465fd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommercialRealEstatePortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019e6a4b-7c8c-7ee5-9889-66f0d69f4e41" xlink:to="loc_us-gaap_CommercialRealEstatePortfolioSegmentMember_019e6a4b-7c8c-76da-83b3-ce1278f465fd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPortfolioSegmentMember_019e6a4b-7c8c-7b82-b1ce-8cdf3669ee13" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommercialPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019e6a4b-7c8c-7ee5-9889-66f0d69f4e41" xlink:to="loc_us-gaap_CommercialPortfolioSegmentMember_019e6a4b-7c8c-7b82-b1ce-8cdf3669ee13" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialPortfolioSegmentMember_019e6a4b-7c8c-7c4c-9f54-55b618b0b4b2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ResidentialPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019e6a4b-7c8c-7ee5-9889-66f0d69f4e41" xlink:to="loc_us-gaap_ResidentialPortfolioSegmentMember_019e6a4b-7c8c-7c4c-9f54-55b618b0b4b2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_OtherConsumerPortfolioSegmentMember_019e6a4b-7c8c-7231-aa26-e3e333265e7c" xlink:href="chnbrdg-20260630.xsd#chnbrdg_OtherConsumerPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019e6a4b-7c8c-7ee5-9889-66f0d69f4e41" xlink:to="loc_chnbrdg_OtherConsumerPortfolioSegmentMember_019e6a4b-7c8c-7231-aa26-e3e333265e7c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward_019e6a4b-7c8c-7cb5-9a39-7b33bdd71654" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_019e6a4b-7c8c-726b-9a23-124de2e7edb4" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward_019e6a4b-7c8c-7cb5-9a39-7b33bdd71654" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest_019e6a4b-7c8c-7714-91d4-0d34101ff2b0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward_019e6a4b-7c8c-7cb5-9a39-7b33bdd71654" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest_019e6a4b-7c8c-7714-91d4-0d34101ff2b0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal_019e6a4b-7c8c-7578-a7c4-2dcecdfc5c89" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward_019e6a4b-7c8c-7cb5-9a39-7b33bdd71654" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal_019e6a4b-7c8c-7578-a7c4-2dcecdfc5c89" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff_019e6a4b-7c8c-7a94-b75b-a37f156ffaf6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward_019e6a4b-7c8c-7cb5-9a39-7b33bdd71654" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff_019e6a4b-7c8c-7a94-b75b-a37f156ffaf6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery_019e6a4b-7c8c-776a-87c0-4e547dfd8b32" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward_019e6a4b-7c8c-7cb5-9a39-7b33bdd71654" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery_019e6a4b-7c8c-776a-87c0-4e547dfd8b32" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest_019e6a4b-7c8c-7771-b465-2225ee27d228" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://chnbrdg.com/role/LoansandAllowanceforLoanCreditLossesScheduleofAmortizedCostsbySegmentofLoansandCreditRiskProfileofLoanPortfolioDetails" xlink:type="simple" xlink:href="chnbrdg-20260630.xsd#LoansandAllowanceforLoanCreditLossesScheduleofAmortizedCostsbySegmentofLoansandCreditRiskProfileofLoanPortfolioDetails"/>
  <link:definitionLink xlink:role="http://chnbrdg.com/role/LoansandAllowanceforLoanCreditLossesScheduleofAmortizedCostsbySegmentofLoansandCreditRiskProfileofLoanPortfolioDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_019e6a4b-7c8c-77c8-89e0-a234783fafb2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_019e6a4b-7c8c-7990-8020-2d6bfab6805b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_019e6a4b-7c8c-77c8-89e0-a234783fafb2" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_019e6a4b-7c8c-7990-8020-2d6bfab6805b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_019e6a4b-7c8c-7c88-a66b-50fc45fd2564" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_019e6a4b-7c8c-7990-8020-2d6bfab6805b" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_019e6a4b-7c8c-7c88-a66b-50fc45fd2564" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019e6a4b-7c8c-7c88-a66b-50fc45fd2564_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_019e6a4b-7c8c-7c88-a66b-50fc45fd2564" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019e6a4b-7c8c-7c88-a66b-50fc45fd2564_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019e6a4b-7c8c-76ee-9512-bf0e7e6a4455" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_019e6a4b-7c8c-7c88-a66b-50fc45fd2564" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019e6a4b-7c8c-76ee-9512-bf0e7e6a4455" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialRealEstatePortfolioSegmentMember_019e6a4b-7c8c-75f6-ab9b-bebcaa434720" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommercialRealEstatePortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019e6a4b-7c8c-76ee-9512-bf0e7e6a4455" xlink:to="loc_us-gaap_CommercialRealEstatePortfolioSegmentMember_019e6a4b-7c8c-75f6-ab9b-bebcaa434720" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPortfolioSegmentMember_019e6a4b-7c8c-7a19-8a35-3c9a88790543" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommercialPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019e6a4b-7c8c-76ee-9512-bf0e7e6a4455" xlink:to="loc_us-gaap_CommercialPortfolioSegmentMember_019e6a4b-7c8c-7a19-8a35-3c9a88790543" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialPortfolioSegmentMember_019e6a4b-7c8c-7220-a5db-c1003a4e1028" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ResidentialPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019e6a4b-7c8c-76ee-9512-bf0e7e6a4455" xlink:to="loc_us-gaap_ResidentialPortfolioSegmentMember_019e6a4b-7c8c-7220-a5db-c1003a4e1028" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_OtherConsumerPortfolioSegmentMember_019e6a4b-7c8c-7721-aec9-20a239b9694e" xlink:href="chnbrdg-20260630.xsd#chnbrdg_OtherConsumerPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019e6a4b-7c8c-76ee-9512-bf0e7e6a4455" xlink:to="loc_chnbrdg_OtherConsumerPortfolioSegmentMember_019e6a4b-7c8c-7721-aec9-20a239b9694e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InternalCreditAssessmentAxis_019e6a4b-7c8c-7726-ad12-bb8216aa817b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InternalCreditAssessmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_019e6a4b-7c8c-7990-8020-2d6bfab6805b" xlink:to="loc_us-gaap_InternalCreditAssessmentAxis_019e6a4b-7c8c-7726-ad12-bb8216aa817b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InternalCreditAssessmentDomain_019e6a4b-7c8c-7726-ad12-bb8216aa817b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InternalCreditAssessmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_InternalCreditAssessmentAxis_019e6a4b-7c8c-7726-ad12-bb8216aa817b" xlink:to="loc_us-gaap_InternalCreditAssessmentDomain_019e6a4b-7c8c-7726-ad12-bb8216aa817b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InternalCreditAssessmentDomain_019e6a4b-7c8c-75ec-89cc-4a4d19a1d534" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InternalCreditAssessmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_InternalCreditAssessmentAxis_019e6a4b-7c8c-7726-ad12-bb8216aa817b" xlink:to="loc_us-gaap_InternalCreditAssessmentDomain_019e6a4b-7c8c-75ec-89cc-4a4d19a1d534" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PassMember_019e6a4b-7c8c-70fc-9df5-f3e2c3e0e19a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PassMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InternalCreditAssessmentDomain_019e6a4b-7c8c-75ec-89cc-4a4d19a1d534" xlink:to="loc_us-gaap_PassMember_019e6a4b-7c8c-70fc-9df5-f3e2c3e0e19a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SpecialMentionMember_019e6a4b-7c8c-7cb3-afc2-4910daab36e0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SpecialMentionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InternalCreditAssessmentDomain_019e6a4b-7c8c-75ec-89cc-4a4d19a1d534" xlink:to="loc_us-gaap_SpecialMentionMember_019e6a4b-7c8c-7cb3-afc2-4910daab36e0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubstandardMember_019e6a4b-7c8c-7c44-aade-6c9c41637727" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubstandardMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InternalCreditAssessmentDomain_019e6a4b-7c8c-75ec-89cc-4a4d19a1d534" xlink:to="loc_us-gaap_SubstandardMember_019e6a4b-7c8c-7c44-aade-6c9c41637727" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DoubtfulMember_019e6a4b-7c8c-7cac-97cf-3623af02810f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DoubtfulMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InternalCreditAssessmentDomain_019e6a4b-7c8c-75ec-89cc-4a4d19a1d534" xlink:to="loc_us-gaap_DoubtfulMember_019e6a4b-7c8c-7cac-97cf-3623af02810f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_LossMember_019e6a4b-7c8c-7200-92ca-74453402613a" xlink:href="chnbrdg-20260630.xsd#chnbrdg_LossMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InternalCreditAssessmentDomain_019e6a4b-7c8c-75ec-89cc-4a4d19a1d534" xlink:to="loc_chnbrdg_LossMember_019e6a4b-7c8c-7200-92ca-74453402613a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossByOriginationYearAbstract_019e6a4b-7c8c-7e11-b6cc-3d622dfbea4d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossByOriginationYearAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_019e6a4b-7c8c-77c8-89e0-a234783fafb2" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossByOriginationYearAbstract_019e6a4b-7c8c-7e11-b6cc-3d622dfbea4d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear_019e6a4b-7c8c-75a3-8686-ee9e25e38d48" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossByOriginationYearAbstract_019e6a4b-7c8c-7e11-b6cc-3d622dfbea4d" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear_019e6a4b-7c8c-75a3-8686-ee9e25e38d48" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear_019e6a4b-7c8c-7e08-b483-835b38712de1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossByOriginationYearAbstract_019e6a4b-7c8c-7e11-b6cc-3d622dfbea4d" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear_019e6a4b-7c8c-7e08-b483-835b38712de1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear_019e6a4b-7c8c-79c1-8f93-208085a630de" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossByOriginationYearAbstract_019e6a4b-7c8c-7e11-b6cc-3d622dfbea4d" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear_019e6a4b-7c8c-79c1-8f93-208085a630de" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear_019e6a4b-7c8c-7a15-a470-b27d08a6a7ef" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossByOriginationYearAbstract_019e6a4b-7c8c-7e11-b6cc-3d622dfbea4d" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear_019e6a4b-7c8c-7a15-a470-b27d08a6a7ef" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear_019e6a4b-7c8c-7ac0-a860-c42924b89cf3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossByOriginationYearAbstract_019e6a4b-7c8c-7e11-b6cc-3d622dfbea4d" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear_019e6a4b-7c8c-7ac0-a860-c42924b89cf3" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear_019e6a4b-7c8c-793e-81db-d7530ae9ca4d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossByOriginationYearAbstract_019e6a4b-7c8c-7e11-b6cc-3d622dfbea4d" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear_019e6a4b-7c8c-793e-81db-d7530ae9ca4d" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestRevolving_019e6a4b-7c8c-7b7d-9d64-849f07fe5b94" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestRevolving"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossByOriginationYearAbstract_019e6a4b-7c8c-7e11-b6cc-3d622dfbea4d" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestRevolving_019e6a4b-7c8c-7b7d-9d64-849f07fe5b94" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan_019e6a4b-7c8c-7e70-ba23-4e338f8a96d3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossByOriginationYearAbstract_019e6a4b-7c8c-7e11-b6cc-3d622dfbea4d" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan_019e6a4b-7c8c-7e70-ba23-4e338f8a96d3" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss_019e6a4b-7c8c-7045-850a-b0600c690c96" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossByOriginationYearAbstract_019e6a4b-7c8c-7e11-b6cc-3d622dfbea4d" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss_019e6a4b-7c8c-7045-850a-b0600c690c96" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoffByOriginationYearAbstract_019e6a4b-7c8c-74ce-9866-5332fd54f7ed" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoffByOriginationYearAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_019e6a4b-7c8c-77c8-89e0-a234783fafb2" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoffByOriginationYearAbstract_019e6a4b-7c8c-74ce-9866-5332fd54f7ed" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff_019e6a4b-7c8c-7a7a-b319-26f2a15e20fa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoffByOriginationYearAbstract_019e6a4b-7c8c-74ce-9866-5332fd54f7ed" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff_019e6a4b-7c8c-7a7a-b319-26f2a15e20fa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff_019e6a4b-7c8c-7141-a14d-29eea730b116" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoffByOriginationYearAbstract_019e6a4b-7c8c-74ce-9866-5332fd54f7ed" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff_019e6a4b-7c8c-7141-a14d-29eea730b116" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff_019e6a4b-7c8c-7b12-89e9-f6d9dae46b3b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoffByOriginationYearAbstract_019e6a4b-7c8c-74ce-9866-5332fd54f7ed" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff_019e6a4b-7c8c-7b12-89e9-f6d9dae46b3b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff_019e6a4b-7c8c-7586-99b8-518d7e9a1377" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoffByOriginationYearAbstract_019e6a4b-7c8c-74ce-9866-5332fd54f7ed" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff_019e6a4b-7c8c-7586-99b8-518d7e9a1377" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff_019e6a4b-7c8c-702e-8183-58c1dd657491" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoffByOriginationYearAbstract_019e6a4b-7c8c-74ce-9866-5332fd54f7ed" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff_019e6a4b-7c8c-702e-8183-58c1dd657491" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff_019e6a4b-7c8c-739c-bfd8-46daf14c5cfc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoffByOriginationYearAbstract_019e6a4b-7c8c-74ce-9866-5332fd54f7ed" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff_019e6a4b-7c8c-739c-bfd8-46daf14c5cfc" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingWriteoff_019e6a4b-7c8c-7993-8b03-d821963de2ed" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingWriteoff"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoffByOriginationYearAbstract_019e6a4b-7c8c-74ce-9866-5332fd54f7ed" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingWriteoff_019e6a4b-7c8c-7993-8b03-d821963de2ed" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoanWriteoff_019e6a4b-7c8c-724c-b845-cf004b43e776" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoanWriteoff"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoffByOriginationYearAbstract_019e6a4b-7c8c-74ce-9866-5332fd54f7ed" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoanWriteoff_019e6a4b-7c8c-724c-b845-cf004b43e776" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff_019e6a4b-7c8c-787f-bc71-dd40c153e352" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoffByOriginationYearAbstract_019e6a4b-7c8c-74ce-9866-5332fd54f7ed" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff_019e6a4b-7c8c-787f-bc71-dd40c153e352" xlink:type="arc" order="9"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://chnbrdg.com/role/BorrowingsDetails" xlink:type="simple" xlink:href="chnbrdg-20260630.xsd#BorrowingsDetails"/>
  <link:definitionLink xlink:role="http://chnbrdg.com/role/BorrowingsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtLineItems_019e6a4b-7d46-7078-8b56-bf441b2fc3a3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShortTermDebtLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShortTermDebtTable_019e6a4b-7d46-758f-8b82-504b434ac701" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfShortTermDebtTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShortTermDebtLineItems_019e6a4b-7d46-7078-8b56-bf441b2fc3a3" xlink:to="loc_us-gaap_ScheduleOfShortTermDebtTable_019e6a4b-7d46-758f-8b82-504b434ac701" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019e6a4b-7d46-7d6a-b001-ae0dc1ffc2e4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShortTermDebtTable_019e6a4b-7d46-758f-8b82-504b434ac701" xlink:to="loc_us-gaap_DebtInstrumentAxis_019e6a4b-7d46-7d6a-b001-ae0dc1ffc2e4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e6a4b-7d46-7d6a-b001-ae0dc1ffc2e4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e6a4b-7d46-7d6a-b001-ae0dc1ffc2e4" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e6a4b-7d46-7d6a-b001-ae0dc1ffc2e4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e6a4b-7d46-7ec4-95fe-597a85480415" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e6a4b-7d46-7d6a-b001-ae0dc1ffc2e4" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e6a4b-7d46-7ec4-95fe-597a85480415" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_TheRevolvingCreditFacilityMember_019e6a4b-7d46-72ef-ab22-721017a336e4" xlink:href="chnbrdg-20260630.xsd#chnbrdg_TheRevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e6a4b-7d46-7ec4-95fe-597a85480415" xlink:to="loc_chnbrdg_TheRevolvingCreditFacilityMember_019e6a4b-7d46-72ef-ab22-721017a336e4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019e6a4b-7d46-7a82-b660-7a78fffae603" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShortTermDebtTable_019e6a4b-7d46-758f-8b82-504b434ac701" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019e6a4b-7d46-7a82-b660-7a78fffae603" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e6a4b-7d46-7a82-b660-7a78fffae603_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e6a4b-7d46-7a82-b660-7a78fffae603" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e6a4b-7d46-7a82-b660-7a78fffae603_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e6a4b-7d46-73b7-9e07-6c4497024faf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e6a4b-7d46-7a82-b660-7a78fffae603" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e6a4b-7d46-73b7-9e07-6c4497024faf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_019e6a4b-7d46-7bda-b9eb-40725be2c9af" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e6a4b-7d46-73b7-9e07-6c4497024faf" xlink:to="loc_us-gaap_LineOfCreditMember_019e6a4b-7d46-7bda-b9eb-40725be2c9af" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019e6a4b-7d46-779d-9411-af1f9c63897c" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShortTermDebtTable_019e6a4b-7d46-758f-8b82-504b434ac701" xlink:to="loc_srt_RangeAxis_019e6a4b-7d46-779d-9411-af1f9c63897c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019e6a4b-7d46-779d-9411-af1f9c63897c_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_019e6a4b-7d46-779d-9411-af1f9c63897c" xlink:to="loc_srt_RangeMember_019e6a4b-7d46-779d-9411-af1f9c63897c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019e6a4b-7d46-7b6d-8700-a7f182366ffe" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_019e6a4b-7d46-779d-9411-af1f9c63897c" xlink:to="loc_srt_RangeMember_019e6a4b-7d46-7b6d-8700-a7f182366ffe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_019e6a4b-7d46-757d-9f43-68e267dc822c" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019e6a4b-7d46-7b6d-8700-a7f182366ffe" xlink:to="loc_srt_MaximumMember_019e6a4b-7d46-757d-9f43-68e267dc822c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_019e6a4b-7d46-70a8-a775-3380c15f74bd" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019e6a4b-7d46-7b6d-8700-a7f182366ffe" xlink:to="loc_srt_MinimumMember_019e6a4b-7d46-70a8-a775-3380c15f74bd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_019e6a4b-7d46-7eb8-a600-fa439567dc6a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShortTermDebtTable_019e6a4b-7d46-758f-8b82-504b434ac701" xlink:to="loc_us-gaap_CreditFacilityAxis_019e6a4b-7d46-7eb8-a600-fa439567dc6a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019e6a4b-7d46-7eb8-a600-fa439567dc6a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_019e6a4b-7d46-7eb8-a600-fa439567dc6a" xlink:to="loc_us-gaap_CreditFacilityDomain_019e6a4b-7d46-7eb8-a600-fa439567dc6a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019e6a4b-7d46-7471-83d8-f4298ab13df6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_019e6a4b-7d46-7eb8-a600-fa439567dc6a" xlink:to="loc_us-gaap_CreditFacilityDomain_019e6a4b-7d46-7471-83d8-f4298ab13df6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_019e6a4b-7d46-79c6-8e42-caeb064f92c9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019e6a4b-7d46-7471-83d8-f4298ab13df6" xlink:to="loc_us-gaap_LineOfCreditMember_019e6a4b-7d46-79c6-8e42-caeb064f92c9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityAxis_019e6a4b-7d46-7449-a40d-579014385873" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShortTermDebtTable_019e6a4b-7d46-758f-8b82-504b434ac701" xlink:to="loc_us-gaap_LineOfCreditFacilityAxis_019e6a4b-7d46-7449-a40d-579014385873" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityLenderDomain_019e6a4b-7d46-7449-a40d-579014385873_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityLenderDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LineOfCreditFacilityAxis_019e6a4b-7d46-7449-a40d-579014385873" xlink:to="loc_us-gaap_LineOfCreditFacilityLenderDomain_019e6a4b-7d46-7449-a40d-579014385873_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityLenderDomain_019e6a4b-7d46-779c-935b-ca98208665c4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityLenderDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LineOfCreditFacilityAxis_019e6a4b-7d46-7449-a40d-579014385873" xlink:to="loc_us-gaap_LineOfCreditFacilityLenderDomain_019e6a4b-7d46-779c-935b-ca98208665c4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_PacificCoastBankersBankMember_019e6a4b-7d46-7303-a81c-0998351dfed3" xlink:href="chnbrdg-20260630.xsd#chnbrdg_PacificCoastBankersBankMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLenderDomain_019e6a4b-7d46-779c-935b-ca98208665c4" xlink:to="loc_chnbrdg_PacificCoastBankersBankMember_019e6a4b-7d46-7303-a81c-0998351dfed3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_FirstNationalBankersBankMember_019e6a4b-7d46-7b4f-9b31-537cab266f39" xlink:href="chnbrdg-20260630.xsd#chnbrdg_FirstNationalBankersBankMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLenderDomain_019e6a4b-7d46-779c-935b-ca98208665c4" xlink:to="loc_chnbrdg_FirstNationalBankersBankMember_019e6a4b-7d46-7b4f-9b31-537cab266f39" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_CommunityBankersBankMember_019e6a4b-7d46-7c20-aaa8-64f7ab2f18f1" xlink:href="chnbrdg-20260630.xsd#chnbrdg_CommunityBankersBankMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLenderDomain_019e6a4b-7d46-779c-935b-ca98208665c4" xlink:to="loc_chnbrdg_CommunityBankersBankMember_019e6a4b-7d46-7c20-aaa8-64f7ab2f18f1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtTypeAxis_019e6a4b-7d46-7684-b4a4-1eb0765ae345" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShortTermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShortTermDebtTable_019e6a4b-7d46-758f-8b82-504b434ac701" xlink:to="loc_us-gaap_ShortTermDebtTypeAxis_019e6a4b-7d46-7684-b4a4-1eb0765ae345" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtTypeDomain_019e6a4b-7d46-7684-b4a4-1eb0765ae345_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShortTermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ShortTermDebtTypeAxis_019e6a4b-7d46-7684-b4a4-1eb0765ae345" xlink:to="loc_us-gaap_ShortTermDebtTypeDomain_019e6a4b-7d46-7684-b4a4-1eb0765ae345_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtTypeDomain_019e6a4b-7d46-735f-b53f-729336fa7fa7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShortTermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ShortTermDebtTypeAxis_019e6a4b-7d46-7684-b4a4-1eb0765ae345" xlink:to="loc_us-gaap_ShortTermDebtTypeDomain_019e6a4b-7d46-735f-b53f-729336fa7fa7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FederalFundsPurchasedMember_019e6a4b-7d46-7d44-ace9-f4fc4afea0e6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FederalFundsPurchasedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtTypeDomain_019e6a4b-7d46-735f-b53f-729336fa7fa7" xlink:to="loc_us-gaap_FederalFundsPurchasedMember_019e6a4b-7d46-7d44-ace9-f4fc4afea0e6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_019e6a4b-7d46-7822-8740-2a3e2676d362" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_019e6a4b-7d46-7078-8b56-bf441b2fc3a3" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_019e6a4b-7d46-7822-8740-2a3e2676d362" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_DebtInstrumentNumberOfTermExtensions_019e6a4b-7d46-7dcb-9507-8cfbc987aee7" xlink:href="chnbrdg-20260630.xsd#chnbrdg_DebtInstrumentNumberOfTermExtensions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_019e6a4b-7d46-7078-8b56-bf441b2fc3a3" xlink:to="loc_chnbrdg_DebtInstrumentNumberOfTermExtensions_019e6a4b-7d46-7dcb-9507-8cfbc987aee7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_DebtInstrumentTermExtension_019e6a4b-7d46-7cf7-9b31-ddd10f69140b" xlink:href="chnbrdg-20260630.xsd#chnbrdg_DebtInstrumentTermExtension"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_019e6a4b-7d46-7078-8b56-bf441b2fc3a3" xlink:to="loc_chnbrdg_DebtInstrumentTermExtension_019e6a4b-7d46-7cf7-9b31-ddd10f69140b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_019e6a4b-7d46-7960-84e1-928b2e990c82" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_019e6a4b-7d46-7078-8b56-bf441b2fc3a3" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_019e6a4b-7d46-7960-84e1-928b2e990c82" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermBorrowings_019e6a4b-7d46-7bda-888e-ea49c66f736b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShortTermBorrowings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_019e6a4b-7d46-7078-8b56-bf441b2fc3a3" xlink:to="loc_us-gaap_ShortTermBorrowings_019e6a4b-7d46-7bda-888e-ea49c66f736b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FederalFundsPurchased_019e6a4b-7d46-7dec-b1d1-31389f76d5af" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FederalFundsPurchased"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_019e6a4b-7d46-7078-8b56-bf441b2fc3a3" xlink:to="loc_us-gaap_FederalFundsPurchased_019e6a4b-7d46-7dec-b1d1-31389f76d5af" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://chnbrdg.com/role/FairValueMeasurementsScheduleofFairValueAssetsMeasuredonRecurringBasisDetails" xlink:type="simple" xlink:href="chnbrdg-20260630.xsd#FairValueMeasurementsScheduleofFairValueAssetsMeasuredonRecurringBasisDetails"/>
  <link:definitionLink xlink:role="http://chnbrdg.com/role/FairValueMeasurementsScheduleofFairValueAssetsMeasuredonRecurringBasisDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e6a4b-7d46-77c6-bb5f-fefdb3e4a17d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e6a4b-7d46-785c-8ef6-fea1aad8e65d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e6a4b-7d46-77c6-bb5f-fefdb3e4a17d" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e6a4b-7d46-785c-8ef6-fea1aad8e65d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_019e6a4b-7d46-706f-922d-1cf658fae516" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e6a4b-7d46-785c-8ef6-fea1aad8e65d" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_019e6a4b-7d46-706f-922d-1cf658fae516" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_019e6a4b-7d46-706f-922d-1cf658fae516_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_019e6a4b-7d46-706f-922d-1cf658fae516" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_019e6a4b-7d46-706f-922d-1cf658fae516_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_019e6a4b-7d46-7ab4-b6d4-b037ff74cab5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_019e6a4b-7d46-706f-922d-1cf658fae516" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_019e6a4b-7d46-7ab4-b6d4-b037ff74cab5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_019e6a4b-7d46-740b-80c3-141c2abfbdec" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsRecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_019e6a4b-7d46-7ab4-b6d4-b037ff74cab5" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_019e6a4b-7d46-740b-80c3-141c2abfbdec" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_019e6a4b-7d46-788d-b360-0bc1cc98e032" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e6a4b-7d46-785c-8ef6-fea1aad8e65d" xlink:to="loc_us-gaap_FinancialInstrumentAxis_019e6a4b-7d46-788d-b360-0bc1cc98e032" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7d46-788d-b360-0bc1cc98e032_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_019e6a4b-7d46-788d-b360-0bc1cc98e032" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7d46-788d-b360-0bc1cc98e032_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7d46-788f-ae93-b908feb00e3f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_019e6a4b-7d46-788d-b360-0bc1cc98e032" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7d46-788f-ae93-b908feb00e3f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_019e6a4b-7d46-7031-856c-49714603def1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_USGovernmentAgenciesDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7d46-788f-ae93-b908feb00e3f" xlink:to="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_019e6a4b-7d46-7031-856c-49714603def1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_019e6a4b-7d46-7c51-9125-16b343ec8b0f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7d46-788f-ae93-b908feb00e3f" xlink:to="loc_us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_019e6a4b-7d46-7c51-9125-16b343ec8b0f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateBondSecuritiesMember_019e6a4b-7d46-788e-9263-641aa3a2b4f7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CorporateBondSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7d46-788f-ae93-b908feb00e3f" xlink:to="loc_us-gaap_CorporateBondSecuritiesMember_019e6a4b-7d46-788e-9263-641aa3a2b4f7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_019e6a4b-7d46-7c44-9904-1923d948abb4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_USStatesAndPoliticalSubdivisionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e6a4b-7d46-788f-ae93-b908feb00e3f" xlink:to="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_019e6a4b-7d46-7c44-9904-1923d948abb4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019e6a4b-7d46-7656-9a4c-c367c268e7fe" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e6a4b-7d46-785c-8ef6-fea1aad8e65d" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019e6a4b-7d46-7656-9a4c-c367c268e7fe" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e6a4b-7d46-7656-9a4c-c367c268e7fe_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019e6a4b-7d46-7656-9a4c-c367c268e7fe" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e6a4b-7d46-7656-9a4c-c367c268e7fe_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e6a4b-7d46-789a-a3da-598f3d987e5f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019e6a4b-7d46-7656-9a4c-c367c268e7fe" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e6a4b-7d46-789a-a3da-598f3d987e5f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_019e6a4b-7d46-7f01-b86f-1ff10ff73bf4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e6a4b-7d46-789a-a3da-598f3d987e5f" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_019e6a4b-7d46-7f01-b86f-1ff10ff73bf4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_019e6a4b-7d46-743f-a0b9-88fb916ac09d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e6a4b-7d46-789a-a3da-598f3d987e5f" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_019e6a4b-7d46-743f-a0b9-88fb916ac09d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_019e6a4b-7d46-7f75-a258-79006e1f7d05" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e6a4b-7d46-789a-a3da-598f3d987e5f" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_019e6a4b-7d46-7f75-a258-79006e1f7d05" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_019e6a4b-7d46-73f4-9e9e-a01b1d1658b6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e6a4b-7d46-77c6-bb5f-fefdb3e4a17d" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_019e6a4b-7d46-73f4-9e9e-a01b1d1658b6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNiCurrentAndNoncurrent_019e6a4b-7d46-71cb-9b69-91a01bb1a8ff" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquitySecuritiesFvNiCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e6a4b-7d46-77c6-bb5f-fefdb3e4a17d" xlink:to="loc_us-gaap_EquitySecuritiesFvNiCurrentAndNoncurrent_019e6a4b-7d46-71cb-9b69-91a01bb1a8ff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_019e6a4b-7d46-7a1c-a5e2-5de9eb5bd370" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e6a4b-7d46-77c6-bb5f-fefdb3e4a17d" xlink:to="loc_us-gaap_AssetsFairValueDisclosure_019e6a4b-7d46-7a1c-a5e2-5de9eb5bd370" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://chnbrdg.com/role/FairValueMeasurementsNarrativeDetails" xlink:type="simple" xlink:href="chnbrdg-20260630.xsd#FairValueMeasurementsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://chnbrdg.com/role/FairValueMeasurementsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e6a4b-7d46-7029-844e-50fb16396ed4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e6a4b-7d46-79ce-a3d0-e07539fea79b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e6a4b-7d46-7029-844e-50fb16396ed4" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e6a4b-7d46-79ce-a3d0-e07539fea79b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByAssetClassAxis_019e6a4b-7d46-766e-925c-7a54253c5a8f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByAssetClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e6a4b-7d46-79ce-a3d0-e07539fea79b" xlink:to="loc_us-gaap_FairValueByAssetClassAxis_019e6a4b-7d46-766e-925c-7a54253c5a8f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_019e6a4b-7d46-766e-925c-7a54253c5a8f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByAssetClassAxis_019e6a4b-7d46-766e-925c-7a54253c5a8f" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_019e6a4b-7d46-766e-925c-7a54253c5a8f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_019e6a4b-7d46-7d8f-af47-6cf6126d455c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByAssetClassAxis_019e6a4b-7d46-766e-925c-7a54253c5a8f" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_019e6a4b-7d46-7d8f-af47-6cf6126d455c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_LoansHeldForSaleMember_019e6a4b-7d46-7801-aaa1-419406067870" xlink:href="chnbrdg-20260630.xsd#chnbrdg_LoansHeldForSaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_019e6a4b-7d46-7d8f-af47-6cf6126d455c" xlink:to="loc_chnbrdg_LoansHeldForSaleMember_019e6a4b-7d46-7801-aaa1-419406067870" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_019e6a4b-7d46-7e63-a427-7ad18972c286" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e6a4b-7d46-79ce-a3d0-e07539fea79b" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_019e6a4b-7d46-7e63-a427-7ad18972c286" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_019e6a4b-7d46-7e63-a427-7ad18972c286_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_019e6a4b-7d46-7e63-a427-7ad18972c286" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_019e6a4b-7d46-7e63-a427-7ad18972c286_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_019e6a4b-7d46-73fd-80e4-9a6873e178bc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_019e6a4b-7d46-7e63-a427-7ad18972c286" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_019e6a4b-7d46-73fd-80e4-9a6873e178bc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsNonrecurringMember_019e6a4b-7d46-7f5e-b1b7-0d94f3a25c4b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsNonrecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_019e6a4b-7d46-73fd-80e4-9a6873e178bc" xlink:to="loc_us-gaap_FairValueMeasurementsNonrecurringMember_019e6a4b-7d46-7f5e-b1b7-0d94f3a25c4b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueAdjustment_019e6a4b-7d46-7758-94c2-fac0d0c885c9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsFairValueAdjustment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e6a4b-7d46-7029-844e-50fb16396ed4" xlink:to="loc_us-gaap_AssetsFairValueAdjustment_019e6a4b-7d46-7758-94c2-fac0d0c885c9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_019e6a4b-7d46-70ed-9722-eabd0a5937f3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e6a4b-7d46-7029-844e-50fb16396ed4" xlink:to="loc_us-gaap_AssetsFairValueDisclosure_019e6a4b-7d46-70ed-9722-eabd0a5937f3" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://chnbrdg.com/role/FairValueMeasurementsScheduleofFairValuebyBalanceSheetGroupingDetails" xlink:type="simple" xlink:href="chnbrdg-20260630.xsd#FairValueMeasurementsScheduleofFairValuebyBalanceSheetGroupingDetails"/>
  <link:definitionLink xlink:role="http://chnbrdg.com/role/FairValueMeasurementsScheduleofFairValuebyBalanceSheetGroupingDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e6a4b-7d46-7a14-a614-870fbd524a99" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e6a4b-7d46-7cbb-8416-790dd92bae8c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e6a4b-7d46-7a14-a614-870fbd524a99" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e6a4b-7d46-7cbb-8416-790dd92bae8c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_019e6a4b-7d46-7f1d-9797-eef12055f359" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByMeasurementBasisAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e6a4b-7d46-7cbb-8416-790dd92bae8c" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_019e6a4b-7d46-7f1d-9797-eef12055f359" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019e6a4b-7d46-7f1d-9797-eef12055f359_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_019e6a4b-7d46-7f1d-9797-eef12055f359" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019e6a4b-7d46-7f1d-9797-eef12055f359_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_019e6a4b-7d46-72f4-8d27-470071c9ba12" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueDisclosureItemAmountsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_019e6a4b-7d46-7f1d-9797-eef12055f359" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_019e6a4b-7d46-72f4-8d27-470071c9ba12" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019e6a4b-7d46-7544-aecb-34b5c1cf2804" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_019e6a4b-7d46-72f4-8d27-470071c9ba12" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019e6a4b-7d46-7544-aecb-34b5c1cf2804" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_019e6a4b-7d46-72a9-8147-3eff0d8b496d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019e6a4b-7d46-7544-aecb-34b5c1cf2804" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_019e6a4b-7d46-72a9-8147-3eff0d8b496d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_019e6a4b-7d46-7ec5-aa47-1cedc7cce7e1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019e6a4b-7d46-7544-aecb-34b5c1cf2804" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_019e6a4b-7d46-7ec5-aa47-1cedc7cce7e1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019e6a4b-7d46-7bec-ba5b-b7ecacfa723b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e6a4b-7d46-7cbb-8416-790dd92bae8c" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019e6a4b-7d46-7bec-ba5b-b7ecacfa723b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e6a4b-7d46-7bec-ba5b-b7ecacfa723b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019e6a4b-7d46-7bec-ba5b-b7ecacfa723b" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e6a4b-7d46-7bec-ba5b-b7ecacfa723b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e6a4b-7d46-7f2e-b61d-33205848ca0e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019e6a4b-7d46-7bec-ba5b-b7ecacfa723b" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e6a4b-7d46-7f2e-b61d-33205848ca0e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_019e6a4b-7d46-78e6-a58e-99d1fd1bd3e6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e6a4b-7d46-7f2e-b61d-33205848ca0e" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_019e6a4b-7d46-78e6-a58e-99d1fd1bd3e6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_019e6a4b-7d46-7126-8b08-81eee0cff486" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e6a4b-7d46-7f2e-b61d-33205848ca0e" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_019e6a4b-7d46-7126-8b08-81eee0cff486" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_019e6a4b-7d46-7703-afbb-bc83a7161a88" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e6a4b-7d46-7f2e-b61d-33205848ca0e" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_019e6a4b-7d46-7703-afbb-bc83a7161a88" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_019e6a4b-7d46-76bb-a3b8-2177a335da5b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e6a4b-7d46-7a14-a614-870fbd524a99" xlink:to="loc_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_019e6a4b-7d46-76bb-a3b8-2177a335da5b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_019fb319-60c7-72b5-9aea-20a28af3b882" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_019e6a4b-7d46-76bb-a3b8-2177a335da5b" xlink:to="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_019fb319-60c7-72b5-9aea-20a28af3b882" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_019e6a4b-7d46-772b-86b5-e9105acb1f29" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_019e6a4b-7d46-76bb-a3b8-2177a335da5b" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_019e6a4b-7d46-772b-86b5-e9105acb1f29" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesFairValue_019e6a4b-7d46-7702-8d1a-a4975c1c0441" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HeldToMaturitySecuritiesFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_019e6a4b-7d46-76bb-a3b8-2177a335da5b" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesFairValue_019e6a4b-7d46-7702-8d1a-a4975c1c0441" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNiCurrentAndNoncurrent_019e6a4b-7d46-7675-a263-2b6767d05680" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquitySecuritiesFvNiCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_019e6a4b-7d46-76bb-a3b8-2177a335da5b" xlink:to="loc_us-gaap_EquitySecuritiesFvNiCurrentAndNoncurrent_019e6a4b-7d46-7675-a263-2b6767d05680" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedInvestmentsAtFairValue_019e6a4b-7d46-7548-b281-ba80c708618d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedInvestmentsAtFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_019e6a4b-7d46-76bb-a3b8-2177a335da5b" xlink:to="loc_us-gaap_RestrictedInvestmentsAtFairValue_019e6a4b-7d46-7548-b281-ba80c708618d" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansReceivableFairValueDisclosure_019e6a4b-7d46-7a88-91f9-fca7a0092fdf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LoansReceivableFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_019e6a4b-7d46-76bb-a3b8-2177a335da5b" xlink:to="loc_us-gaap_LoansReceivableFairValueDisclosure_019e6a4b-7d46-7a88-91f9-fca7a0092fdf" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_AccruedInterestReceivableFairValueDisclosure_019e6a4b-7d46-7f9d-a8b9-9dd60499de6d" xlink:href="chnbrdg-20260630.xsd#chnbrdg_AccruedInterestReceivableFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_019e6a4b-7d46-76bb-a3b8-2177a335da5b" xlink:to="loc_chnbrdg_AccruedInterestReceivableFairValueDisclosure_019e6a4b-7d46-7f9d-a8b9-9dd60499de6d" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_019e6a4b-7d46-7e7f-a51c-116d67d0c911" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e6a4b-7d46-7a14-a614-870fbd524a99" xlink:to="loc_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_019e6a4b-7d46-7e7f-a51c-116d67d0c911" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_TimeDepositsFairValueDisclosure_019e6a4b-7d46-798c-b9dc-3dffeb10470e" xlink:href="chnbrdg-20260630.xsd#chnbrdg_TimeDepositsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_019e6a4b-7d46-7e7f-a51c-116d67d0c911" xlink:to="loc_chnbrdg_TimeDepositsFairValueDisclosure_019e6a4b-7d46-798c-b9dc-3dffeb10470e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_AccruedInterestPayableFairValueDisclosure_019e6a4b-7d46-7c3d-94b6-f77c01630775" xlink:href="chnbrdg-20260630.xsd#chnbrdg_AccruedInterestPayableFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_019e6a4b-7d46-7e7f-a51c-116d67d0c911" xlink:to="loc_chnbrdg_AccruedInterestPayableFairValueDisclosure_019e6a4b-7d46-7c3d-94b6-f77c01630775" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://chnbrdg.com/role/AccumulatedOtherComprehensiveLossScheduleofAccumulatedOtherComprehensiveLossDetails" xlink:type="simple" xlink:href="chnbrdg-20260630.xsd#AccumulatedOtherComprehensiveLossScheduleofAccumulatedOtherComprehensiveLossDetails"/>
  <link:definitionLink xlink:role="http://chnbrdg.com/role/AccumulatedOtherComprehensiveLossScheduleofAccumulatedOtherComprehensiveLossDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_019e6a4b-7d46-7b77-be08-2d0b5d9b0a94" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_019e6a4b-7d46-72ed-8521-a32944027f74" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_019e6a4b-7d46-7b77-be08-2d0b5d9b0a94" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_019e6a4b-7d46-72ed-8521-a32944027f74" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_019e6a4b-7d46-7e85-9600-1d58063bb16f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_019e6a4b-7d46-72ed-8521-a32944027f74" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_019e6a4b-7d46-7e85-9600-1d58063bb16f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019e6a4b-7d46-7e85-9600-1d58063bb16f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019e6a4b-7d46-7e85-9600-1d58063bb16f" xlink:to="loc_us-gaap_EquityComponentDomain_019e6a4b-7d46-7e85-9600-1d58063bb16f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019e6a4b-7d46-7926-b6fb-90f5279d3d48" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019e6a4b-7d46-7e85-9600-1d58063bb16f" xlink:to="loc_us-gaap_EquityComponentDomain_019e6a4b-7d46-7926-b6fb-90f5279d3d48" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019e6a4b-7d46-7cd7-9efd-ed4944c0be38" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019e6a4b-7d46-7926-b6fb-90f5279d3d48" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019e6a4b-7d46-7cd7-9efd-ed4944c0be38" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_019e6a4b-7d46-789a-a351-4bb9769e40c7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019e6a4b-7d46-7cd7-9efd-ed4944c0be38" xlink:to="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_019e6a4b-7d46-789a-a351-4bb9769e40c7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_AOCIUnrealizedGainLossOnSecuritiesTransferredFromAvailableForSaleToHeldToMaturityParentMember_019e6a4b-7d46-72dd-9b99-a30c3f767d52" xlink:href="chnbrdg-20260630.xsd#chnbrdg_AOCIUnrealizedGainLossOnSecuritiesTransferredFromAvailableForSaleToHeldToMaturityParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019e6a4b-7d46-7cd7-9efd-ed4944c0be38" xlink:to="loc_chnbrdg_AOCIUnrealizedGainLossOnSecuritiesTransferredFromAvailableForSaleToHeldToMaturityParentMember_019e6a4b-7d46-72dd-9b99-a30c3f767d52" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_019e6a4b-7d46-7016-aa4a-4f28592f4894" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AOCIAttributableToParentNetOfTaxRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_019e6a4b-7d46-7b77-be08-2d0b5d9b0a94" xlink:to="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_019e6a4b-7d46-7016-aa4a-4f28592f4894" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019e6a4b-7d46-749f-98cc-d8bf417818f9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_019e6a4b-7d46-7016-aa4a-4f28592f4894" xlink:to="loc_us-gaap_StockholdersEquity_019e6a4b-7d46-749f-98cc-d8bf417818f9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent_019e6a4b-7d46-7896-8522-3c1fd1207b79" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_019e6a4b-7d46-7016-aa4a-4f28592f4894" xlink:to="loc_us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent_019e6a4b-7d46-7896-8522-3c1fd1207b79" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_OCIBeforeReclassificationsAmortizationOfUnrealizedHoldingLossesNetOfTaxAttributableToParent_019e6a4b-7d46-7491-9ad5-35de1b4e8d60" xlink:href="chnbrdg-20260630.xsd#chnbrdg_OCIBeforeReclassificationsAmortizationOfUnrealizedHoldingLossesNetOfTaxAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_019e6a4b-7d46-7016-aa4a-4f28592f4894" xlink:to="loc_chnbrdg_OCIBeforeReclassificationsAmortizationOfUnrealizedHoldingLossesNetOfTaxAttributableToParent_019e6a4b-7d46-7491-9ad5-35de1b4e8d60" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019e6a4b-7d46-75fe-b072-1ed53f05b565" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsTax_019e6a4b-7d46-7004-a9d5-7b1e619ebeb9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_019e6a4b-7d46-7b77-be08-2d0b5d9b0a94" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsTax_019e6a4b-7d46-7004-a9d5-7b1e619ebeb9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_OtherComprehensiveIncomeLossBeforeReclassificationsAmortizationOfUnrealizedHoldingLossesTax_019e6a4b-7d46-7b56-812f-1c2e670fdee4" xlink:href="chnbrdg-20260630.xsd#chnbrdg_OtherComprehensiveIncomeLossBeforeReclassificationsAmortizationOfUnrealizedHoldingLossesTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_019e6a4b-7d46-7b77-be08-2d0b5d9b0a94" xlink:to="loc_chnbrdg_OtherComprehensiveIncomeLossBeforeReclassificationsAmortizationOfUnrealizedHoldingLossesTax_019e6a4b-7d46-7b56-812f-1c2e670fdee4" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://chnbrdg.com/role/AccumulatedOtherComprehensiveLossNarrativeDetails" xlink:type="simple" xlink:href="chnbrdg-20260630.xsd#AccumulatedOtherComprehensiveLossNarrativeDetails"/>
  <link:definitionLink xlink:role="http://chnbrdg.com/role/AccumulatedOtherComprehensiveLossNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_019e6a4b-7d46-7610-98be-adf995085417" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_019e6a4b-7d46-7b8d-98fa-7ee8fb770b78" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_019e6a4b-7d46-7610-98be-adf995085417" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_019e6a4b-7d46-7b8d-98fa-7ee8fb770b78" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_019e6a4b-7d46-72f6-b258-2ace8d978e92" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_019e6a4b-7d46-7b8d-98fa-7ee8fb770b78" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_019e6a4b-7d46-72f6-b258-2ace8d978e92" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_019e6a4b-7d46-72f6-b258-2ace8d978e92_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_019e6a4b-7d46-72f6-b258-2ace8d978e92" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_019e6a4b-7d46-72f6-b258-2ace8d978e92_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_019e6a4b-7d46-73c4-9a08-07da33e72b1b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_019e6a4b-7d46-72f6-b258-2ace8d978e92" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_019e6a4b-7d46-73c4-9a08-07da33e72b1b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_019e6a4b-7d46-716b-8c07-58356ec41ccb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_019e6a4b-7d46-73c4-9a08-07da33e72b1b" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_019e6a4b-7d46-716b-8c07-58356ec41ccb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_019e6a4b-7d46-71d3-88b3-0258d5236f2e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_019e6a4b-7d46-7b8d-98fa-7ee8fb770b78" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_019e6a4b-7d46-71d3-88b3-0258d5236f2e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019e6a4b-7d46-71d3-88b3-0258d5236f2e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019e6a4b-7d46-71d3-88b3-0258d5236f2e" xlink:to="loc_us-gaap_EquityComponentDomain_019e6a4b-7d46-71d3-88b3-0258d5236f2e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019e6a4b-7d46-757b-bbcd-c163e9791060" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019e6a4b-7d46-71d3-88b3-0258d5236f2e" xlink:to="loc_us-gaap_EquityComponentDomain_019e6a4b-7d46-757b-bbcd-c163e9791060" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_019e6a4b-7d46-7fc7-865c-6a0a56ae11a8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019e6a4b-7d46-757b-bbcd-c163e9791060" xlink:to="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_019e6a4b-7d46-7fc7-865c-6a0a56ae11a8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019e6a4b-7d46-7fbe-8c07-fda240fea795" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_019e6a4b-7d46-7610-98be-adf995085417" xlink:to="loc_us-gaap_NetIncomeLoss_019e6a4b-7d46-7fbe-8c07-fda240fea795" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://chnbrdg.com/role/EarningsPerShareNarrativeDetails" xlink:type="simple" xlink:href="chnbrdg-20260630.xsd#EarningsPerShareNarrativeDetails"/>
  <link:definitionLink xlink:role="http://chnbrdg.com/role/EarningsPerShareNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasicLineItems_019e6a4b-7d46-7c01-9a36-cda9c59b0ee0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareBasicLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable_019e6a4b-7d46-790b-b69b-57a98abf062e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EarningsPerShareBasicLineItems_019e6a4b-7d46-7c01-9a36-cda9c59b0ee0" xlink:to="loc_us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable_019e6a4b-7d46-790b-b69b-57a98abf062e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_019e6a4b-7d46-7ece-8938-81a2a574b518" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable_019e6a4b-7d46-790b-b69b-57a98abf062e" xlink:to="loc_us-gaap_StatementClassOfStockAxis_019e6a4b-7d46-7ece-8938-81a2a574b518" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_019e6a4b-7d46-7ece-8938-81a2a574b518_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_019e6a4b-7d46-7ece-8938-81a2a574b518" xlink:to="loc_us-gaap_ClassOfStockDomain_019e6a4b-7d46-7ece-8938-81a2a574b518_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_019e6a4b-7d46-7a11-b5b5-01d78204ab3e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_019e6a4b-7d46-7ece-8938-81a2a574b518" xlink:to="loc_us-gaap_ClassOfStockDomain_019e6a4b-7d46-7a11-b5b5-01d78204ab3e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_019e6a4b-7d46-7ad8-9dab-4d92e86ca3a2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_019e6a4b-7d46-7a11-b5b5-01d78204ab3e" xlink:to="loc_us-gaap_CommonClassAMember_019e6a4b-7d46-7ad8-9dab-4d92e86ca3a2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_chnbrdg_NumberOfClassesOfStock_019e6a4b-7d46-72b8-a749-3c9c4e45dece" xlink:href="chnbrdg-20260630.xsd#chnbrdg_NumberOfClassesOfStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicLineItems_019e6a4b-7d46-7c01-9a36-cda9c59b0ee0" xlink:to="loc_chnbrdg_NumberOfClassesOfStock_019e6a4b-7d46-72b8-a749-3c9c4e45dece" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConversionOfStockSharesConverted1_019e6a4b-7d46-7bf8-875f-69c03513fdf0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConversionOfStockSharesConverted1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicLineItems_019e6a4b-7d46-7c01-9a36-cda9c59b0ee0" xlink:to="loc_us-gaap_ConversionOfStockSharesConverted1_019e6a4b-7d46-7bf8-875f-69c03513fdf0" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://chnbrdg.com/role/EarningsPerShareScheduleofEarningsPerShareBasicandDilutedTwoClassMethodDetails" xlink:type="simple" xlink:href="chnbrdg-20260630.xsd#EarningsPerShareScheduleofEarningsPerShareBasicandDilutedTwoClassMethodDetails"/>
  <link:definitionLink xlink:role="http://chnbrdg.com/role/EarningsPerShareScheduleofEarningsPerShareBasicandDilutedTwoClassMethodDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasicLineItems_019e6a4b-7d46-73a6-8552-b948c3635aca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareBasicLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable_019e6a4b-7d46-775f-ae9b-7529ecde20e0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EarningsPerShareBasicLineItems_019e6a4b-7d46-73a6-8552-b948c3635aca" xlink:to="loc_us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable_019e6a4b-7d46-775f-ae9b-7529ecde20e0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_019e6a4b-7d46-761f-8316-cf53045c2bd2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable_019e6a4b-7d46-775f-ae9b-7529ecde20e0" xlink:to="loc_us-gaap_StatementClassOfStockAxis_019e6a4b-7d46-761f-8316-cf53045c2bd2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_019e6a4b-7d46-761f-8316-cf53045c2bd2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_019e6a4b-7d46-761f-8316-cf53045c2bd2" xlink:to="loc_us-gaap_ClassOfStockDomain_019e6a4b-7d46-761f-8316-cf53045c2bd2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_019e6a4b-7d46-7859-b82c-cde837b9418b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_019e6a4b-7d46-761f-8316-cf53045c2bd2" xlink:to="loc_us-gaap_ClassOfStockDomain_019e6a4b-7d46-7859-b82c-cde837b9418b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_019e6a4b-7d46-7bff-b396-d13a1652dd36" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_019e6a4b-7d46-7859-b82c-cde837b9418b" xlink:to="loc_us-gaap_CommonClassAMember_019e6a4b-7d46-7bff-b396-d13a1652dd36" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassBMember_019e6a4b-7d46-7ce2-917a-7ebe3f75e3fa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonClassBMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_019e6a4b-7d46-7859-b82c-cde837b9418b" xlink:to="loc_us-gaap_CommonClassBMember_019e6a4b-7d46-7ce2-917a-7ebe3f75e3fa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019e6a4b-7d46-78c0-ad69-1fb2f482fb42" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicLineItems_019e6a4b-7d46-73a6-8552-b948c3635aca" xlink:to="loc_us-gaap_NetIncomeLoss_019e6a4b-7d46-78c0-ad69-1fb2f482fb42" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Dividends_019e6a4b-7d46-7abe-ba7e-69d745ffd82a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Dividends"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicLineItems_019e6a4b-7d46-73a6-8552-b948c3635aca" xlink:to="loc_us-gaap_Dividends_019e6a4b-7d46-7abe-ba7e-69d745ffd82a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UndistributedEarnings_019e6a4b-7d46-7a69-b1a8-31d8b444e4da" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UndistributedEarnings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicLineItems_019e6a4b-7d46-73a6-8552-b948c3635aca" xlink:to="loc_us-gaap_UndistributedEarnings_019e6a4b-7d46-7a69-b1a8-31d8b444e4da" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UndistributedEarningsDiluted_019e6a4b-7d46-7b9b-a93a-b10b48ca42ee" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UndistributedEarningsDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicLineItems_019e6a4b-7d46-73a6-8552-b948c3635aca" xlink:to="loc_us-gaap_UndistributedEarningsDiluted_019e6a4b-7d46-7b9b-a93a-b10b48ca42ee" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_019e6a4b-7d46-7622-8ede-3aa78f64a0b7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicLineItems_019e6a4b-7d46-73a6-8552-b948c3635aca" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_019e6a4b-7d46-7622-8ede-3aa78f64a0b7" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019e6a4b-7d46-7e2a-89cc-105c39a439e7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicLineItems_019e6a4b-7d46-73a6-8552-b948c3635aca" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019e6a4b-7d46-7e2a-89cc-105c39a439e7" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasicDistributed_019e6a4b-7d46-7c76-9a17-eaca8a987f4a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareBasicDistributed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicLineItems_019e6a4b-7d46-73a6-8552-b948c3635aca" xlink:to="loc_us-gaap_EarningsPerShareBasicDistributed_019e6a4b-7d46-7c76-9a17-eaca8a987f4a" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDilutedDistributed_019e6a4b-7d46-71e3-b96a-3f69d48bbf2d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareDilutedDistributed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicLineItems_019e6a4b-7d46-73a6-8552-b948c3635aca" xlink:to="loc_us-gaap_EarningsPerShareDilutedDistributed_019e6a4b-7d46-71e3-b96a-3f69d48bbf2d" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasicUndistributed_019e6a4b-7d46-7e73-b696-d2c0137294f1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareBasicUndistributed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicLineItems_019e6a4b-7d46-73a6-8552-b948c3635aca" xlink:to="loc_us-gaap_EarningsPerShareBasicUndistributed_019e6a4b-7d46-7e73-b696-d2c0137294f1" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDilutedUndistributed_019e6a4b-7d46-78dc-b29c-006207d63a7a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareDilutedUndistributed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicLineItems_019e6a4b-7d46-73a6-8552-b948c3635aca" xlink:to="loc_us-gaap_EarningsPerShareDilutedUndistributed_019e6a4b-7d46-78dc-b29c-006207d63a7a" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_019e6a4b-7d46-73ee-bcef-ee7f7567a092" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicLineItems_019e6a4b-7d46-73a6-8552-b948c3635aca" xlink:to="loc_us-gaap_EarningsPerShareBasic_019e6a4b-7d46-73ee-bcef-ee7f7567a092" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_019e6a4b-7d46-707f-8d8a-f1f29767dc2a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicLineItems_019e6a4b-7d46-73a6-8552-b948c3635aca" xlink:to="loc_us-gaap_EarningsPerShareDiluted_019e6a4b-7d46-707f-8d8a-f1f29767dc2a" xlink:type="arc" order="11"/>
  </link:definitionLink>
</link:linkbase>
