Percentage of voting equity interest acquired in business combination.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 805
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479328/805-10-50-8

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 805
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 38
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479303/805-10-55-38

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479328/805-10-50-2

+ Details

Name:	us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Value of capital units or capital shares. This element is relevant to issuers of face-amount certificates and registered investment companies.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-2

+ Details

Name:	us-gaap_CapitalUnits
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-28

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481687/323-10-50-3

+ Details

Name:	us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_BusinessAcquisitionAxis=SVMB_ZhejiangLinglingyiNetworkTechnologyCoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=SVMB_LiangshanTongfuTechnologyCoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=SVMB_HangzhouZhuyiTechnologyCoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=SVMB_LiangshanTongfuTechnologyCoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=SVMB_HangzhouZhuyiMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=SVMB_ZhuyiTechnologyAnpingCoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=SVMB_YibinHuiboTechnologyCoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=SVMB_XideZhuyiTechnologyCoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=SVMB_ZhuyiTechnologyTainingCoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=SVMB_LeshanZhuyiQifengIntelligentTechnologyDevelopmentCoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=SVMB_TianjinYuntuInternetTechnologyCoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=SVMB_JinyunTingxiangParkingServiceCoLtdMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Variable Interest Entities (Details Narrative) - CNY (¥)	Apr. 17, 2026	Feb. 06, 2026	Mar. 14, 2024	Sep. 29, 2022	May 12, 2022	Apr. 29, 2022	Oct. 14, 2021	May 18, 2021	Jul. 04, 2019	Nov. 13, 2017
Zhejiang Linglingyi Network Technology Co. [Member]
Ownership interest acquired percentage						100.00%
Liangshan Tongfu Technology Co. [Member]
Ownership interest acquired percentage				26.00%
Hangzhou Zhuyi Technology Co [Member]
Capital amount										¥ 60,000,000
Liangshan Tongfu Technology Co. [Member] \| Hangzhou Zhuyi [Member]
Ownership interest percentage				67.00%
Zhuyi Technology (Anping) Co. [Member] \| Hangzhou Zhuyi [Member]
Ownership interest percentage					90.00%
Yibin Huibo Technology Co. [Member] \| Hangzhou Zhuyi [Member]
Ownership interest percentage									80.00%
Xide Zhuyi Technology Co. [Member] \| Hangzhou Zhuyi [Member]
Ownership interest percentage							67.00%
Zhuyi Technology (Taining) Co. [Member] \| Hangzhou Zhuyi [Member]
Ownership interest percentage								72.00%
Leshan Zhuyi Qifeng Intelligent Technology Development Co. [Member] \| Hangzhou Zhuyi [Member]
Ownership interest percentage			65.00%
Tianjin Yuntu Internet Technology Co. [Member] \| Hangzhou Zhuyi [Member]
Ownership interest percentage		100.00%
Jinyun Tingxiang Parking Service Co., Ltd [Member] \| Hangzhou Zhuyi [Member]
Ownership interest percentage	100.00%