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SHARE-BASED COMPENSATION - Additional Information (Details)
1 Months Ended 6 Months Ended 12 Months Ended
Feb. 26, 2024
USD ($)
$ / shares
shares
Mar. 15, 2023
USD ($)
$ / shares
shares
Mar. 09, 2023
USD ($)
$ / shares
shares
Feb. 28, 2022
USD ($)
$ / shares
shares
Jan. 05, 2022
USD ($)
$ / shares
shares
Dec. 10, 2021
$ / shares
shares
Nov. 10, 2021
shares
Jan. 31, 2022
shares
Dec. 31, 2024
CNY (¥)
shares
Dec. 31, 2024
USD ($)
shares
Dec. 31, 2023
CNY (¥)
shares
Jun. 30, 2024
shares
Dec. 31, 2021
$ / shares
SHARE-BASED COMPENSATION                          
Number of shares expected to be vested                 4,456 4,456      
Stock Options, Shares, Granted                 0 0   0  
Share-Based Payment Arrangement, Option                          
SHARE-BASED COMPENSATION                          
Stock or Unit Option Plan Expense | ¥                 ¥ 0   ¥ 0    
Share-based compensation | ¥                 0        
Restricted shares                          
SHARE-BASED COMPENSATION                          
Stock or Unit Option Plan Expense | ¥                 ¥ 0   ¥ 1,070,144    
Restricted stock closing price | $ / shares           $ 1.6             $ 1.31
Number of shares issued   1,000,000     1,050,000                
Stock Options, Shares, Granted                 0 0   347,527  
Shares outstanding                 0 0 0    
Restricted shares issued for services (in shares)           250,000 500,000 250,000          
Stock issued value for services | $   $ 372,600     $ 1,354,500                
Exercise price (per share) | $ / shares   $ 0.3726     $ 1.29                
Restricted shares | Class A ordinary shares                          
SHARE-BASED COMPENSATION                          
Shares outstanding                 0 0 0    
Restricted shares | Class B ordinary shares                          
SHARE-BASED COMPENSATION                          
Granted during the period 12,900,000                        
Fair value of shares | $ $ 2,130,000                        
Stock price | $ / shares $ 0.17                        
Restricted shares | Employee                          
SHARE-BASED COMPENSATION                          
Fair value of shares | $       $ 1,708,024                  
Restricted stock closing price | $ / shares       $ 1.04                  
Exercisable Options, Average Remaining Contractual life (years)       3 years                  
Restricted shares issued (in shares)                 1,094,888 1,094,888      
Number of shares expected to be vested                 547,443 547,443      
Restricted shares | Employee | Class A ordinary shares                          
SHARE-BASED COMPENSATION                          
Granted during the period       1,642,331                  
Number of shares issued   1,000,000                      
Stock issued value for services | $   $ 372,600                      
Exercise price (per share) | $ / shares   $ 0.3726                      
Restricted shares | Management and staffs | Class A ordinary shares                          
SHARE-BASED COMPENSATION                          
Stock Options, Shares, Granted 6,255,483                        
Stock Options, Shares, Granted value | $ $ 988,366                        
Stock Options, Shares, Granted (per share) | $ / shares $ 0.158                        
Restricted shares | Senior Manager                          
SHARE-BASED COMPENSATION                          
Stock or Unit Option Plan Expense                 ¥ 5,353,151 $ 733,379 ¥ 2,866,560    
Share-based compensation                 ¥ 1,700,000 $ 240,000      
Granted during the period     3,000,000 1,600,000                  
Fair value of shares | $     $ 3,025,000 $ 1,694,000                  
Restricted stock closing price | $ / shares     $ 1.01 $ 1.06                  
Outstanding Restricted Shares, Average Remaining Amortization Period (Years)                 1 month 28 days 1 month 28 days      
Restricted shares | Senior Manager | Class B ordinary shares                          
SHARE-BASED COMPENSATION                          
Shares outstanding                 12,900,000 12,900,000 0    
Restricted shares | Post 2024 Reverse Stock Split                          
SHARE-BASED COMPENSATION                          
Restricted stock closing price | $ / shares           $ 28.8             $ 23.58
Number of shares issued   55,556     58,333                
Restricted shares issued for services (in shares)           13,889 27,778 13,889          
Exercise price (per share) | $ / shares   $ 6.71     $ 23.22                
Restricted shares | Post 2024 Reverse Stock Split | Employee                          
SHARE-BASED COMPENSATION                          
Restricted stock closing price | $ / shares       $ 18.72                  
Restricted shares issued (in shares)                 60,827 60,827      
Number of shares expected to be vested                 30,412 30,412      
Restricted shares | Post 2024 Reverse Stock Split | Employee | Class A ordinary shares                          
SHARE-BASED COMPENSATION                          
Granted during the period       91,241                  
Number of shares issued   55,556                      
Exercise price (per share) | $ / shares   $ 6.71                      
Restricted shares | Post 2024 Reverse Stock Split | Management and staffs | Class A ordinary shares                          
SHARE-BASED COMPENSATION                          
Stock Options, Shares, Granted 347,527                        
Stock Options, Shares, Granted (per share) | $ / shares $ 2.844