Interest expense (Tables)

12 Months Ended

Mar. 31, 2023

Interest and Debt Expense [Abstract]

Summary of Interest Expense

	Year ended March 31, 2021		Year ended March 31, 2022		Year ended March 31, 2023
	RMB		RMB		RMB
Amortization charges on promissory notes		21,611		17,144		9,706
Interest expense on borrowings		6,039		3,740		3,644
Total		27,650		20,884		13,350