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LIQUIDITY (Details)
 6 Months Ended
Jun. 14, 2021
USD ($)
$ / shares
shares
Jan. 28, 2021
USD ($)
Jun. 26, 2020
USD ($)
$ / shares
shares
May 21, 2020
USD ($)
$ / shares
shares
Dec. 31, 2021
CNY (¥)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
CNY (¥)
Dec. 31, 2021
USD ($)
$ / shares
Jun. 30, 2021
CNY (¥)
shares
Jun. 30, 2021
$ / shares
Apr. 05, 2021
$ / shares
Nov. 25, 2020
USD ($)
$ / shares
Jun. 30, 2020
shares
Number of warrants to purchase ordinary shares     1,680,000           29,520,000       911,112
Gross proceeds of before deducting the placement agent's fees and other estimated offering expenses | $     $ 2,100,000 $ 2,100,000                  
Short-term borrowings due to related parties         ¥ 9,149,292     $ 1,438,247 ¥ 12,676,042        
Short-term bank loan         10,000,000     $ 1,600,000 ¥ 15,000,000        
Loss from operations         ¥ 37,300,000 $ 5,900,000 ¥ 9,102,177            
Renewal term for commitment letter for financial support         3 years 3 years              
Registered direct offering                          
Gross proceeds of before deducting the placement agent's fees and other estimated offering expenses | $ $ 55,000,000.0                        
Class A ordinary shares                          
Number of warrants to purchase ordinary shares 6,014,102   1,680,000 911,112                  
Issuance of ordinary shares, net of issuance costs (in shares) 6,014,102                        
Par value (in dollars per share) | $ / shares $ 0.0925   $ 0.0925 $ 0.0925       $ 0.0925   $ 0.0925 $ 0.0925    
Class A ordinary shares | Convertible Notes                          
Aggregate principal amount | $                       $ 6,485,000  
Par value (in dollars per share) | $ / shares                       $ 0.0925  
Conversion rate of note | $ / shares                       $ 0.71  
Principal and interests amount converted | $   $ 6,549,990                      
Class A ordinary shares | Concurrent private placement                          
Issuance of ordinary shares, net of issuance costs (in shares) 8,814,102                        
Pre-funded warrants                          
Number of warrants to purchase ordinary shares 8,814,102                        
Issuance of ordinary shares, net of issuance costs (in shares) 2,800,000                        
Gross proceeds of before deducting the placement agent's fees and other estimated offering expenses | $ $ 55,000,000.0