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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Accounts Receivable, Net - Schedule of Accounts Receivable (Details) ¥ in Thousands, $ in Thousands	Sep. 30, 2024 CNY (¥)	Sep. 30, 2024 USD ($)	Mar. 31, 2024 CNY (¥)	Mar. 31, 2024 USD ($)	Mar. 31, 2023 CNY (¥)	Mar. 31, 2022 CNY (¥)	Mar. 31, 2021 CNY (¥)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance of expected credit loss			¥ (486)		¥ (602)	¥ (469)	¥ (256)
Total	¥ 47,133	$ 6,716	50,118	$ 6,941	76,742
Product sales [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable			47,672		71,471
Online marketing and information service and other service [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable			¥ 2,932		¥ 5,873