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FAIR VALUE MEASUREMENTS (Details)
12 Months Ended
Mar. 31, 2022
CNY (¥)
FAIR VALUE MEASUREMENTS  
Assets measured at fair value on a recurring basis, transfers into level 3 ¥ 0
Assets measured at fair value on a recurring basis, transfers out of level 3 0
Liabilities measured at fair value on a recurring basis, transfers into level 3 0
Liabilities measured at fair value on a recurring basis, transfers into level 3, transfers out of level 3 ¥ 0