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LEASES - Additional information (Details)
Dec. 31, 2021
CNY (¥)
Dec. 31, 2021
USD ($)
Jun. 30, 2021
CNY (¥)
Jul. 01, 2019
CNY (¥)
Jul. 01, 2019
USD ($)
Lessee, Lease, Description [Line Items]          
Operating lease right-of-use assets (including 352,775 and 119,029 ($18,423) from a related party as of June 30, 2021 and December 31, 2021, respectively) ¥ 6,084,606 $ 956,486 ¥ 7,925,930    
Operating Lease, liabilities ¥ 6,207,561 $ 975,814 ¥ 7,018,933    
ASU 2016-02 | Restatement          
Lessee, Lease, Description [Line Items]          
Operating lease right-of-use assets (including 352,775 and 119,029 ($18,423) from a related party as of June 30, 2021 and December 31, 2021, respectively)       ¥ 1,228,963 $ 193,190
Operating Lease, liabilities       ¥ 1,228,963 $ 193,190
Minimum          
Lessee, Lease, Description [Line Items]          
Lease term 1 year 1 year      
Maximum          
Lessee, Lease, Description [Line Items]          
Lease term 3 years 3 years