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Government Grants and Subsidies (Details) - Schedule of Government Subsidies Received ¥ in Thousands | 12 Months Ended
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Mar. 31, 2024 USD ($) | Mar. 31, 2024 CNY (¥) | Mar. 31, 2023 USD ($) | Mar. 31, 2022 USD ($)
Schedule of Government Subsidies Received [Abstract] |  |  |  |
Rental payment for factory space and dormitories located in Shenzhen (offset against cost of sales) |  |  | $ 247,000 |
Salaries of Hong Kong employees (offset against selling, general and administrative expenses) | 0 | ¥ 1,000 | 62,000 |
Employment subsidy (included in other income) | 0 |  |  |
Total | $ 0 |  | $ 309,000 |

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- Definition Cash payments to lessor's for use of assets under operating leases. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 25 -Subparagraph (g) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-25 + Details
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- Definition Payments of cash to employees, including wages and salaries, during the current period. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 17 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-17 + Details
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