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COMMITMENTS AND CONTINGENCIES - Legal proceeding (Detaills) - Mingda Tianjin (VIE)
1 Months Ended
Sep. 05, 2019
CNY (¥)
Sep. 05, 2019
USD ($)
Jan. 10, 2019
CNY (¥)
Jan. 10, 2019
USD ($)
Jan. 03, 2018
CNY (¥)
Jan. 03, 2018
USD ($)
Nov. 30, 2018
CNY (¥)
Nov. 30, 2018
USD ($)
Sep. 18, 2018
CNY (¥)
Sep. 18, 2018
USD ($)
Nov. 30, 2015
CNY (¥)
Nov. 30, 2015
USD ($)
Jan. 10, 2019
USD ($)
Loss Contingencies [Line Items]                          
First installment of sales agency fees received                 ¥ 1,845,722 $ 267,217      
payment of installments 105,437 15,265         1,736,378 251,387          
Tianjin Huacheng Century Investment Co. Ltd | Sales Agency Service Contract                          
Loss Contingencies [Line Items]                          
Loss Contingency, default amount of sales agency fees and retention fees                     ¥ 2,792,854 $ 429,700  
Civil Mediation Agreement | Tianjin Huacheng Century Investment Co. Ltd | Sales Agency Service Contract                          
Loss Contingencies [Line Items]                          
First installment of sales agency fees due by or before February 9, 2018         ¥ 500,000 $ 76,900              
Second installment of sales agency fees due by or before October 31, 2018         1,146,427 176,400              
Third installment of sales agency fees due by or before December 31, 2018         ¥ 1,146,427 $ 176,400              
Percentage of balance due as agreed to pay by defendant     90.00%                   90.00%
Balance of damages due     ¥ 2,063,569                   $ 300,033
Total amount received from defendant     ¥ 2,063,568 $ 300,033