Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount of cost to be recognized for option under share-based payment arrangement.

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Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Gross number of share options (or share units) granted during the period.

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Percentage of vesting of award under share-based payment arrangement.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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SHARE-BASED COMPENSATION (Details) - CNY (¥) ¥ in Thousands		12 Months Ended
SHARE-BASED COMPENSATION (Details) - CNY (¥) ¥ in Thousands	Nov. 19, 2018	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
SHARE-BASED COMPENSATION
Share-based compensation expense		¥ 47,313	¥ 26,534	¥ (19,122)
General and administrative expense
SHARE-BASED COMPENSATION
Share-based compensation expense		¥ 44,088	¥ 26,534	¥ (24,091)
Outstanding weighted average share options
SHARE-BASED COMPENSATION
Service period (in years)	4 years
Expiration period (in years)		3 months
Granted (in shares)		10,429,567	1,266,357	6,700,665
Outstanding weighted average share options \| 2018 Second Plan
SHARE-BASED COMPENSATION
Vesting percentage	25.00%
Performance Awards
SHARE-BASED COMPENSATION
Unrecognized compensation costs		¥ 62,100
Performance Awards \| General and administrative expense
SHARE-BASED COMPENSATION
Share-based compensation expense		¥ 33,000	¥ 7,700