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Acquisition of a subsidiary (Details) - Schedule of Acquisition of a subsidiary
¥ in Millions
Jul. 20, 2021
USD ($)
Jul. 20, 2021
CNY (¥)
Jun. 30, 2021
USD ($)
Schedule of Acquisition of a subsidiary [Abstract]      
Deposit paid for acquisition of a subsidiary $ 2,320,000 ¥ 15 $ 3,096,646