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Restricted cash (Details) - CNY (¥)
¥ in Thousands
Jun. 30, 2022
Jun. 30, 2021
Restricted cash    
Bank deposits held in an escrow bank account ¥ 5,772 ¥ 3,680
Bank deposits frozen for legal proceedings 26,604  
Restricted cash ¥ 32,376 ¥ 3,680