Including the current and noncurrent portions, carrying value as of the balance sheet date of a written promise to pay a note, initially due after one year or beyond the operating cycle if longer, which can be exchanged for a specified amount of one or more securities (typically common stock), at the option of the issuer or the holder.

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

CONVERTIBLE NOTES/LONG-TERM DEBT (Details) ¥ in Thousands, $ in Thousands	Mar. 31, 2022 CNY (¥)	Mar. 31, 2022 USD ($)	Mar. 31, 2021 CNY (¥)
Long-term debt
-Current portion	¥ 102,206	$ 16,123
-Non- Current portion	817,648	$ 128,981
Long-term debt	¥ 919,854
2024 Notes
Debt Instrument [Line Items]
Convertible notes			¥ 1,614,040