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LEASES - weighted average remaining lease terms and discount rates (Details)
6 Months Ended
Dec. 31, 2021
CNY (¥)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
CNY (¥)
Jun. 30, 2021
Remaining lease term and discount rate:        
Weighted average remaining lease term (years) 2 years 1 month 24 days 2 years 1 month 24 days   2 years 7 months 2 days
Weighted average discount rate 5.00% 5.00%   5.00%
Operating lease costs ¥ 1,723,764 $ 270,972 ¥ 594,614  
Short-term lease costs ¥ 316,099 $ 49,690 ¥ 523,295