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TRADE ACCOUNTS RECEIVABLE, NET - Summary of Movement of allowance for doubtful accounts (Details)
6 Months Ended
Dec. 31, 2019
USD ($)
Dec. 31, 2019
CNY (¥)
Jun. 30, 2019
CNY (¥)
Dec. 31, 2018
CNY (¥)
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Charge to expense $ 3,665 ¥ 25,537   ¥ (1,494,707)
Third Party [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Beginning balance 523,154 3,645,334 ¥ 3,252,405  
Charge to expense 8,559 59,638 392,929  
Charge to reversal       (1,305,399)
Ending balance $ 531,713 ¥ 3,704,972 ¥ 3,645,334 ¥ 3,252,405