<?xml version="1.0" encoding="ASCII"?>
<!-- XBRL document created with Praxa -->
<!-- Copyright (c) 2026 Praxa LLC. All Rights Reserved.-->
<!-- Creation Date: 2026-09-29T05:46:57.4879+00:00 -->
<xs:schema targetNamespace="http://onepgti.com/20260630" attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:yddl="http://onepgti.com/20260630" xmlns:us-gaap="http://fasb.org/us-gaap/2026" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2024-01-31" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:dtr="http://www.xbrl.org/dtr/type/2024-01-31" xmlns:srt="http://fasb.org/srt/2026" xmlns:country="http://xbrl.sec.gov/country/2026" xmlns:dei="http://xbrl.sec.gov/dei/2026" xmlns:enum2="http://xbrl.org/2020/extensible-enumerations-2.0">
  <xs:import namespace="http://fasb.org/us-gaap/2026" schemaLocation="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd" />
  <xs:import namespace="http://www.xbrl.org/dtr/type/2024-01-31" schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.xsd" />
  <xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <xs:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />
  <xs:import namespace="http://fasb.org/srt/2026" schemaLocation="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd" />
  <xs:import namespace="http://xbrl.sec.gov/country/2026" schemaLocation="https://xbrl.sec.gov/country/2026/country-2026.xsd" />
  <xs:import namespace="http://xbrl.sec.gov/dei/2026" schemaLocation="https://xbrl.sec.gov/dei/2026/dei-2026.xsd" />
  <xs:import namespace="http://xbrl.org/2020/extensible-enumerations-2.0" schemaLocation="https://www.xbrl.org/2020/extensible-enumerations-2.0.xsd" />
  <xs:annotation>
    <xs:appinfo>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="yddl-20260630_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:title="Presentation link" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="yddl-20260630_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:title="Label link" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="yddl-20260630_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:title="Definition link" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="yddl-20260630_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:title="Calculation link" xlink:type="simple" />
      <link:roleType roleURI="http://onepgti.com/20260630/role/Cover" id="Cover">
        <link:definition>995300 - Document - Cover</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/UnauditedInterimCondensedConsolidatedBalanceSheets" id="UnauditedInterimCondensedConsolidatedBalanceSheets">
        <link:definition>995301 - Statement - Unaudited Interim Condensed Consolidated Balance Sheets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/UnauditedInterimCondensedConsolidatedBalanceSheetsParentheticals" id="UnauditedInterimCondensedConsolidatedBalanceSheetsParentheticals">
        <link:definition>995302 - Statement - Unaudited Interim Condensed Consolidated Balance Sheets (Parentheticals)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/UnauditedInterimCondensedConsolidatedStatementsofIncomeandComprehensiveIncome" id="UnauditedInterimCondensedConsolidatedStatementsofIncomeandComprehensiveIncome">
        <link:definition>995303 - Statement - Unaudited Interim Condensed Consolidated Statements of Income and Comprehensive Income</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/UnauditedInterimCondensedConsolidatedStatementsofChangesinShareholdersEquity" id="UnauditedInterimCondensedConsolidatedStatementsofChangesinShareholdersEquity">
        <link:definition>995304 - Statement - Unaudited Interim Condensed Consolidated Statements of Changes in Shareholders&#8217; Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/UnauditedInterimCondensedConsolidatedStatementsofCashFlowsUnaudited" id="UnauditedInterimCondensedConsolidatedStatementsofCashFlowsUnaudited">
        <link:definition>995305 - Statement - Unaudited Interim Condensed Consolidated Statements of Cash Flows (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/OrganizationandBusiness" id="OrganizationandBusiness">
        <link:definition>995306 - Disclosure - Organization and Business</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/SummaryofSignificantAccountingPolicies" id="SummaryofSignificantAccountingPolicies">
        <link:definition>995307 - Disclosure - Summary of Significant Accounting Policies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/VariableInterestEntities" id="VariableInterestEntities">
        <link:definition>995308 - Disclosure - Variable Interest Entities</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/AccountsReceivablesNet" id="AccountsReceivablesNet">
        <link:definition>995309 - Disclosure - Accounts Receivables, Net</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/InventoriesNet" id="InventoriesNet">
        <link:definition>995310 - Disclosure - Inventories, Net</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/OtherReceivablesandAssetsCurrentandNonCurrent" id="OtherReceivablesandAssetsCurrentandNonCurrent">
        <link:definition>995311 - Disclosure - Other Receivables and Assets, Current and Non-Current</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/LoanReceivable" id="LoanReceivable">
        <link:definition>995312 - Disclosure - Loan Receivable</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/PropertyPlantandEquipmentNet" id="PropertyPlantandEquipmentNet">
        <link:definition>995313 - Disclosure - Property, Plant, and Equipment, Net</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/RelatedPartyTransactionsandBalances" id="RelatedPartyTransactionsandBalances">
        <link:definition>995314 - Disclosure - Related Party Transactions and Balances</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/IncomeTaxes" id="IncomeTaxes">
        <link:definition>995315 - Disclosure - Income Taxes</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/EmployeeContributionPlan" id="EmployeeContributionPlan">
        <link:definition>995316 - Disclosure - Employee Contribution Plan</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/ShareholdersEquity" id="ShareholdersEquity">
        <link:definition>995317 - Disclosure - Shareholders&#8217; Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/ConcentrationofRisk" id="ConcentrationofRisk">
        <link:definition>995318 - Disclosure - Concentration of Risk</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/CommitmentsandContingencies" id="CommitmentsandContingencies">
        <link:definition>995319 - Disclosure - Commitments and Contingencies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/DisaggregationofRevenue" id="DisaggregationofRevenue">
        <link:definition>995320 - Disclosure - Disaggregation of Revenue</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/Leases" id="Leases">
        <link:definition>995321 - Disclosure - Leases</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/SubsequentEvents" id="SubsequentEvents">
        <link:definition>995322 - Disclosure - Subsequent Events</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/AccountingPoliciesbyPolicyPolicies" id="AccountingPoliciesbyPolicyPolicies">
        <link:definition>996323 - Disclosure - Accounting Policies, by Policy (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/OrganizationandBusinessTables" id="OrganizationandBusinessTables">
        <link:definition>996324 - Disclosure - Organization and Business (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/SummaryofSignificantAccountingPoliciesTables" id="SummaryofSignificantAccountingPoliciesTables">
        <link:definition>996325 - Disclosure - Summary of Significant Accounting Policies (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/VariableInterestEntitiesTables" id="VariableInterestEntitiesTables">
        <link:definition>996326 - Disclosure - Variable Interest Entities (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/AccountsReceivablesNetTables" id="AccountsReceivablesNetTables">
        <link:definition>996327 - Disclosure - Accounts Receivables, Net (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/InventoriesNetTables" id="InventoriesNetTables">
        <link:definition>996328 - Disclosure - Inventories, Net (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/OtherReceivablesandAssetsCurrentandNonCurrentTables" id="OtherReceivablesandAssetsCurrentandNonCurrentTables">
        <link:definition>996329 - Disclosure - Other Receivables and Assets, Current and Non-Current (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/PropertyPlantandEquipmentNetTables" id="PropertyPlantandEquipmentNetTables">
        <link:definition>996330 - Disclosure - Property, Plant, and Equipment, Net (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/RelatedPartyTransactionsandBalancesTables" id="RelatedPartyTransactionsandBalancesTables">
        <link:definition>996331 - Disclosure - Related Party Transactions and Balances (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/IncomeTaxesTables" id="IncomeTaxesTables">
        <link:definition>996332 - Disclosure - Income Taxes (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/ShareholdersEquityTables" id="ShareholdersEquityTables">
        <link:definition>996333 - Disclosure - Shareholders&#8217; Equity (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/ConcentrationofRiskTables" id="ConcentrationofRiskTables">
        <link:definition>996334 - Disclosure - Concentration of Risk (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/DisaggregationofRevenueTables" id="DisaggregationofRevenueTables">
        <link:definition>996335 - Disclosure - Disaggregation of Revenue (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/LeasesTables" id="LeasesTables">
        <link:definition>996336 - Disclosure - Leases (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/OrganizationandBusinessDetails" id="OrganizationandBusinessDetails">
        <link:definition>996337 - Disclosure - Organization and Business (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/OrganizationandBusinessScheduleofInformationofOneandOneCaymansConsolidatedSubsidiaryDetails" id="OrganizationandBusinessScheduleofInformationofOneandOneCaymansConsolidatedSubsidiaryDetails">
        <link:definition>996338 - Disclosure - Organization and Business - Schedule of Information of One and One Cayman&#8217;s Consolidated Subsidiary (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/SummaryofSignificantAccountingPoliciesDetails" id="SummaryofSignificantAccountingPoliciesDetails">
        <link:definition>996339 - Disclosure - Summary of Significant Accounting Policies (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/SummaryofSignificantAccountingPoliciesScheduleofExchangeRateUsedfortheTranslationDetails" id="SummaryofSignificantAccountingPoliciesScheduleofExchangeRateUsedfortheTranslationDetails">
        <link:definition>996340 - Disclosure - Summary of Significant Accounting Policies - Schedule of Exchange Rate Used for the Translation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/SummaryofSignificantAccountingPoliciesScheduleofPropertyPlantandEquipmentDetails" id="SummaryofSignificantAccountingPoliciesScheduleofPropertyPlantandEquipmentDetails">
        <link:definition>996341 - Disclosure - Summary of Significant Accounting Policies - Schedule of Property, Plant and Equipment (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/VariableInterestEntitiesDetails" id="VariableInterestEntitiesDetails">
        <link:definition>996342 - Disclosure - Variable Interest Entities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/VariableInterestEntitiesScheduleofFinancialStatementofVIEsDetails" id="VariableInterestEntitiesScheduleofFinancialStatementofVIEsDetails">
        <link:definition>996343 - Disclosure - Variable Interest Entities - Schedule of Financial Statement of VIEs (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/AccountsReceivablesNetDetails" id="AccountsReceivablesNetDetails">
        <link:definition>996344 - Disclosure - Accounts Receivables, Net (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/AccountsReceivablesNetScheduleofAccountsReceivablesNetDetails" id="AccountsReceivablesNetScheduleofAccountsReceivablesNetDetails">
        <link:definition>996345 - Disclosure - Accounts Receivables, Net - Schedule of Accounts Receivables, Net (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/InventoriesNetDetails" id="InventoriesNetDetails">
        <link:definition>996346 - Disclosure - Inventories, Net (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/InventoriesNetScheduleofInventoriesNetDetails" id="InventoriesNetScheduleofInventoriesNetDetails">
        <link:definition>996347 - Disclosure - Inventories, Net - Schedule of Inventories, Net (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/OtherReceivablesandAssetsCurrentandNonCurrentDetails" id="OtherReceivablesandAssetsCurrentandNonCurrentDetails">
        <link:definition>996348 - Disclosure - Other Receivables and Assets, Current and Non-Current   (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/OtherReceivablesandCurrentAssetsScheduleofOtherReceivablesandCurrentAssetsDetails" id="OtherReceivablesandCurrentAssetsScheduleofOtherReceivablesandCurrentAssetsDetails">
        <link:definition>996349 - Disclosure - Other Receivables and Current Assets - Schedule of Other Receivables and Current Assets (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/LoanReceivableDetails" id="LoanReceivableDetails">
        <link:definition>996350 - Disclosure - Loan Receivable (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/PropertyPlantandEquipmentNetDetails" id="PropertyPlantandEquipmentNetDetails">
        <link:definition>996351 - Disclosure - Property, Plant, and Equipment, Net (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/PropertyPlantandEquipmentNetScheduleofPropertyPlantandEquipmentNetDetails" id="PropertyPlantandEquipmentNetScheduleofPropertyPlantandEquipmentNetDetails">
        <link:definition>996352 - Disclosure - Property, Plant, and Equipment, Net - Schedule of Property, Plant, and Equipment, Net (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/PropertyPlantandEquipmentNetScheduleofDepreciationExpensesDetails" id="PropertyPlantandEquipmentNetScheduleofDepreciationExpensesDetails">
        <link:definition>996353 - Disclosure - Property, Plant, and Equipment, Net - Schedule of Depreciation Expenses (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/RelatedPartyTransactionsandBalancesDetails" id="RelatedPartyTransactionsandBalancesDetails">
        <link:definition>996354 - Disclosure - Related Party Transactions and Balances (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/RelatedPartyTransactionsandBalancesScheduleofRelatedPartiesandtheNatureoftheirRelationshipsDetails" id="RelatedPartyTransactionsandBalancesScheduleofRelatedPartiesandtheNatureoftheirRelationshipsDetails">
        <link:definition>996355 - Disclosure - Related Party Transactions and Balances - Schedule of Related Parties and the Nature of their Relationships (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/RelatedPartyTransactionsandBalancesScheduleofAmountsDuetoRelatedPartiesDetails" id="RelatedPartyTransactionsandBalancesScheduleofAmountsDuetoRelatedPartiesDetails">
        <link:definition>996356 - Disclosure - Related Party Transactions and Balances - Schedule of Amounts Due to Related Parties (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/IncomeTaxesDetails" id="IncomeTaxesDetails">
        <link:definition>996357 - Disclosure - Income Taxes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/IncomeTaxesScheduleofTaxesPayableDetails" id="IncomeTaxesScheduleofTaxesPayableDetails">
        <link:definition>996358 - Disclosure - Income Taxes - Schedule of Taxes Payable (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/EmployeeContributionPlanDetails" id="EmployeeContributionPlanDetails">
        <link:definition>996359 - Disclosure - Employee Contribution Plan (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/ShareholdersEquityDetails" id="ShareholdersEquityDetails">
        <link:definition>996360 - Disclosure - Shareholders&#8217; Equity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/ShareholdersEquityScheduleofWarrantsWeightedAverageExercisePriceandRemaininglifeDetails" id="ShareholdersEquityScheduleofWarrantsWeightedAverageExercisePriceandRemaininglifeDetails">
        <link:definition>996361 - Disclosure - Shareholders&#8217; Equity - Schedule of Warrants Weighted Average Exercise Price and Remaining life (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/ConcentrationofRiskDetails" id="ConcentrationofRiskDetails">
        <link:definition>996362 - Disclosure - Concentration of Risk (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/ConcentrationofRiskScheduleofConcentrationofCustomersDetails" id="ConcentrationofRiskScheduleofConcentrationofCustomersDetails">
        <link:definition>996363 - Disclosure - Concentration of Risk - Schedule of Concentration of Customers (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/DisaggregationofRevenueScheduleofDisaggregatesofRevenueDetails" id="DisaggregationofRevenueScheduleofDisaggregatesofRevenueDetails">
        <link:definition>996364 - Disclosure - Disaggregation of Revenue - Schedule of Disaggregates of Revenue (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/LeasesDetails" id="LeasesDetails">
        <link:definition>996365 - Disclosure - Leases (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/LeasesScheduleofLeaseCostDetails" id="LeasesScheduleofLeaseCostDetails">
        <link:definition>996366 - Disclosure - Leases - Schedule of Lease Cost (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://onepgti.com/20260630/role/LeasesScheduleofOperatingLeaseMaturityDetails" id="LeasesScheduleofOperatingLeaseMaturityDetails">
        <link:definition>996367 - Disclosure - Leases - Schedule of Operating Lease Maturity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xs:appinfo>
  </xs:annotation>
  <xs:element id="yddl_PurchaseMember" name="PurchaseMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_CustomerAMember" name="CustomerAMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_CustomerCMember" name="CustomerCMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_SupplierBMember" name="SupplierBMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_SupplierDMember" name="SupplierDMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_ScheduleOfConcentrationOfCustomersAbstract" name="ScheduleOfConcentrationOfCustomersAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_CustomerBMember" name="CustomerBMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_SupplierAMember" name="SupplierAMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_SupplierCMember" name="SupplierCMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_SupplierEMember" name="SupplierEMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_CopperAlloyIngotsMember" name="CopperAlloyIngotsMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_SlagMember" name="SlagMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_LeasesDetailsTable" name="LeasesDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_AluminiumAlloyMember" name="AluminiumAlloyMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_BrassAlloyIngotsMember" name="BrassAlloyIngotsMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_TotalOperatingLeaseROUAssetAndCorrespondingLeaseLiability" name="TotalOperatingLeaseROUAssetAndCorrespondingLeaseLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="yddl_SupplierGMember" name="SupplierGMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_ScheduleOfDisaggregatesOfRevenueAbstract" name="ScheduleOfDisaggregatesOfRevenueAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_ScheduleOfLeaseCostAbstract" name="ScheduleOfLeaseCostAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_LeasesScheduleofLeaseCostDetailsTable" name="LeasesScheduleofLeaseCostDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_ManufacturingCostsMember" name="ManufacturingCostsMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_CashPaidForAmountsIncludedInMeasurementOfLeaseLiabilitiesAbstract" name="CashPaidForAmountsIncludedInMeasurementOfLeaseLiabilitiesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_WeightedAverageRemainingLeaseTermAbstract" name="WeightedAverageRemainingLeaseTermAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_AverageDiscountRateAbstract" name="AverageDiscountRateAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_PaymentsOfPrincipalOnFinancedAmountForPurchaseOfVehicle" name="PaymentsOfPrincipalOnFinancedAmountForPurchaseOfVehicle" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="yddl_VariableInterestEntityAbstract" name="VariableInterestEntityAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_UnissuedOrdinaryShares" name="UnissuedOrdinaryShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <xs:element id="yddl_ScheduleOfRelatedPartiesAndTheNatureOfTheirRelationshipsAbstract" name="ScheduleOfRelatedPartiesAndTheNatureOfTheirRelationshipsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_PropertyPlantandEquipmentNetScheduleofDepreciationExpensesDetailsTable" name="PropertyPlantandEquipmentNetScheduleofDepreciationExpensesDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_LoanReceivableDetailsTable" name="LoanReceivableDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_AccountsReceivableBalance" name="AccountsReceivableBalance" type="dtr:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <xs:element id="yddl_CustomersBMember" name="CustomersBMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_ValueAddedTaxPolicyTextBlock" name="ValueAddedTaxPolicyTextBlock" type="dtr:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="yddl_YodaMetalMember" name="YodaMetalMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_DLMetalMember" name="DLMetalMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_ThresholdPercent" name="ThresholdPercent" type="dtr:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="yddl_SummaryofSignificantAccountingPoliciesDetailsTable" name="SummaryofSignificantAccountingPoliciesDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_BorrowerRepaidAmount" name="BorrowerRepaidAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="yddl_ContingentLiability" name="ContingentLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="yddl_GrantedExercisableTerm" name="GrantedExercisableTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="yddl_CustomerAOneMember" name="CustomerAOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_CustomerBOneMember" name="CustomerBOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_CustomerATwoMember" name="CustomerATwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_CustomerBTwoMember" name="CustomerBTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_SellingGeneralAndAdministrativeExpenseMember" name="SellingGeneralAndAdministrativeExpenseMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_IncomeStatementsLocationAxis" name="IncomeStatementsLocationAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_IncomeStatementsLocationDomain" name="IncomeStatementsLocationDomain" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_HuaJunYanMember" name="HuaJunYanMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_ConcentrationofRiskDetailsTable" name="ConcentrationofRiskDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_VariableInterestEntitiesDetailsTable" name="VariableInterestEntitiesDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_CustomersAMember" name="CustomersAMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_PropertyPlantAndEquipmentNetTableTextBlock" name="PropertyPlantAndEquipmentNetTableTextBlock" type="dtr:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="yddl_ScheduleOfTaxesPayableTableTextBlock" name="ScheduleOfTaxesPayableTableTextBlock" type="dtr:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="yddl_OneAndOneHKMember" name="OneAndOneHKMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_DescriptionOfSubsidiaryOfLimitedLiabilityCompanyOrLimitedPartnershipOwnershipInterest" name="DescriptionOfSubsidiaryOfLimitedLiabilityCompanyOrLimitedPartnershipOwnershipInterest" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="yddl_ScheduleOfInformationOfOneAndOneCaymanSConsolidatedSubsidiaryAbstract" name="ScheduleOfInformationOfOneAndOneCaymanSConsolidatedSubsidiaryAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_ScheduleOfPropertyPlantAndEquipmentAbstract" name="ScheduleOfPropertyPlantAndEquipmentAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_PeriodEndMember" name="PeriodEndMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_ScheduleOfFinancialStatementOfViesAbstract" name="ScheduleOfFinancialStatementOfViesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_ScheduleOfFinancialStatementOfVIEsLineItems" name="ScheduleOfFinancialStatementOfVIEsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_CaifenYanMember" name="CaifenYanMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_RelatedPartiesRelationship" name="RelatedPartiesRelationship" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="yddl_ScheduleOfRelatedPartiesAndNatureOfTheirRelationshipsTableTextBlock" name="ScheduleOfRelatedPartiesAndNatureOfTheirRelationshipsTableTextBlock" type="dtr:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="yddl_PrepaidPromotionServiceFees" name="PrepaidPromotionServiceFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="yddl_ScheduleOfWeightedAverageExercisePriceAndRemainingLifeAbstract" name="ScheduleOfWeightedAverageExercisePriceAndRemainingLifeAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_ScheduleOfWeightedAverageExercisePriceAndRemainingLifeTable" name="ScheduleOfWeightedAverageExercisePriceAndRemainingLifeTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionOutstandingWeightedAverageExercisePrice" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionOutstandingWeightedAverageExercisePrice" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <xs:element id="yddl_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionOutstandingWeightedAverageRemainingLife" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionOutstandingWeightedAverageRemainingLife" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="yddl_ClassAAndClassBOrdinarySharesMember" name="ClassAAndClassBOrdinarySharesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_AmortizationOfOperatingLeaseRightOfUseAssets" name="AmortizationOfOperatingLeaseRightOfUseAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="yddl_ValueAddedTaxPayableCurrent" name="ValueAddedTaxPayableCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="yddl_ValueAddedTaxPercent" name="ValueAddedTaxPercent" type="dtr:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="yddl_BoardOfDirectorsMember" name="BoardOfDirectorsMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_IssuedAndOutstandingOrdinaryShares" name="IssuedAndOutstandingOrdinaryShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <xs:element id="yddl_ScheduleOfDepreciationExpensesAbstract" name="ScheduleOfDepreciationExpensesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_ShareholdersEquityDetailsTable" name="ShareholdersEquityDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_GreenshoeWarrantsMember" name="GreenshoeWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_CommonInvestorWarrantsMember" name="CommonInvestorWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_PlacementAgentWarrantsMember" name="PlacementAgentWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_DepositsForWorkshopConsumablesAndProductionMaterials" name="DepositsForWorkshopConsumablesAndProductionMaterials" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="yddl_ScheduleOfPropertyPlantAndEquipmentDepreciationExpensesTableTextBlock" name="ScheduleOfPropertyPlantAndEquipmentDepreciationExpensesTableTextBlock" type="dtr:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="yddl_AverageRateMember" name="AverageRateMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_RelatedPartyTransactionsandBalancesScheduleofRelatedPartiesandtheNatureoftheirRelationshipsDetailsTable" name="RelatedPartyTransactionsandBalancesScheduleofRelatedPartiesandtheNatureoftheirRelationshipsDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_ScheduleOfAmountsDueToRelatedPartiesAbstract" name="ScheduleOfAmountsDueToRelatedPartiesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_SummaryofSignificantAccountingPoliciesScheduleofPropertyPlantandEquipmentDetailsTable" name="SummaryofSignificantAccountingPoliciesScheduleofPropertyPlantandEquipmentDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_WorkshopConsumablesAndProductionMaterials" name="WorkshopConsumablesAndProductionMaterials" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="yddl_RelatedPartyTransactionsandBalancesDetailsTable" name="RelatedPartyTransactionsandBalancesDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_IncomeTaxesDetailsTable" name="IncomeTaxesDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_InventoryExpandableSpareParts" name="InventoryExpandableSpareParts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="yddl_ScheduleOfOtherReceivablesAndCurrentAssetsAbstract" name="ScheduleOfOtherReceivablesAndCurrentAssetsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_ScheduleOfPropertyPlantAndEquipmentNetAbstract" name="ScheduleOfPropertyPlantAndEquipmentNetAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_OrganizationConsolidationAndPresentationOfFinancialStatementsTable" name="OrganizationConsolidationAndPresentationOfFinancialStatementsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_OrganizationConsolidationAndPresentationOfFinancialStatementsLineItems" name="OrganizationConsolidationAndPresentationOfFinancialStatementsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="yddl_WarrantsAndRelatedTransactionCostsPolicyTextBlock" name="WarrantsAndRelatedTransactionCostsPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
</xs:schema>
