Government Grants and Subsidies (Details) - Schedule of Government Subsidies Received ¥ in Thousands	12 Months Ended
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

Payments of cash to employees, including wages and salaries, during the current period.

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

Name:	us-gaap_PaymentsToEmployees
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration