Inventories (Details) - Schedule of Inventory ¥ in Thousands, $ in Thousands	Mar. 31, 2024 CNY (¥)	Mar. 31, 2024 USD ($)	Mar. 31, 2023 CNY (¥)
Schedule of Inventory [Abstract]
Raw materials	¥ 9,522		¥ 12,294
Work in progress	1,558		2,972
Finished goods	10,866		11,136
Total inventory, gross	21,946		26,402
Inventory reserve	(10,920)		(10,233)
Total inventory, net	¥ 11,026	$ 1,651	¥ 16,169

Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

+ References

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Amount of valuation reserve for inventory.

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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No definition available.

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