Percentage of borrowings outstanding rate.

No definition available.

Name:	SVMB_PercentageOfBorrowingsOutstandingRate
Namespace Prefix:	SVMB_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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+ Details

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

- Definition

The effective interest rate during the reporting period.

+ References

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+ Details

Name:	us-gaap_LineOfCreditFacilityInterestRateDuringPeriod
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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

- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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+ Details

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

- Definition

Description of long-term debt arrangements, which are debt arrangements that originally require full repayment more than twelve months after issuance or greater than the normal operating cycle of the company, if longer, and disclosures pertaining to the underlying arrangements, including repayment terms, conversion features, interest rates, restrictions on assets and activities, debt covenants, and other matters important to users of the financial statements. Types of long-term debt arrangements include borrowing under notes payable, bonds payable, debentures, term loans, and other contractual obligations for payment.

+ References

+ Details

Name:	us-gaap_LongTermDebtDescription
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

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- Definition

The cash inflow from a loan, supported by a promissory note, granted to related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth.

+ References

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Name:	us-gaap_RepaymentOfNotesReceivableFromRelatedParties
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Balance Type:	debit
Period Type:	duration

- Details

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

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=SVMB_BeijingZhiboMember
Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Balance Type:
Period Type:

Related Party Transactions (Details Narrative)		6 Months Ended
Related Party Transactions (Details Narrative)	Oct. 01, 2019 USD ($)	Aug. 31, 2024 USD ($)	Feb. 29, 2024 USD ($)	Feb. 28, 2023 USD ($)	Feb. 28, 2023 CNY (¥)	Jan. 15, 2023 USD ($)	Jan. 15, 2023 CNY (¥)	Sep. 01, 2020 USD ($)	Sep. 01, 2020 CNY (¥)	Oct. 01, 2019 CNY (¥)
Related Party Transaction [Line Items]
Long-term debt		$ 987,306	$ 2,917,599			$ 32,740,623	¥ 232,785,827.31
Long term debt description		Zhibo extended the above contracts to September 30, 2025 when they expired in 2022. Repayments and interest expenses are not required until September 30, 2024. Interest expenses calculated on an annual rate of 3% will be paid monthly from 1 October, 2024. Principle will be fully repaid upon maturity.
Payment		$ 257,579
Shaoxing Keqiao Zhuyi Technology Co., Ltd [Member]
Related Party Transaction [Line Items]
Payment		$ 257,579
Beijing Zhibo [Member] \| Loan Agreements [Member]
Related Party Transaction [Line Items]
Line of credit facility, maximum borrowing capacity	$ 45,028,818									¥ 300,000,000
Line of credit facility, interest rate during period	3.60%
Percentage of borrowings outstanding rate	25.00%
Debt instrument, face amount								$ 3,302,098	¥ 22,000,000
Long-term debt				$ 31,053,765	¥ 215,280,227.44