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SHARE BASED COMPENSATION (Narrative) (Details)
1 Months Ended 12 Months Ended
Oct. 10, 2014
Nov. 16, 2016
$ / shares
shares
Nov. 15, 2016
$ / shares
Sep. 23, 2016
shares
Aug. 25, 2016
shares
Aug. 31, 2014
shares
Aug. 31, 2009
shares
Dec. 31, 2018
CNY (¥)
¥ / shares
shares
Dec. 31, 2018
USD ($)
shares
Dec. 31, 2017
CNY (¥)
shares
Dec. 31, 2016
CNY (¥)
Dec. 31, 2016
USD ($)
Dec. 31, 2018
$ / shares
Jul. 31, 2009
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Number of vesting increments           5                
Options granted               0 0          
Market value of ordinary shares | (per share)               ¥ 16.97         $ 2.47  
Intrinsic value of options exercised | ¥               ¥ 3,057,319   ¥ 110,973,732 ¥ 81,059,329      
Unrecognized share-based compensation expense | ¥               ¥ 12,635,056            
Unrecognized share-based compensation expense, weighted-average recognition period               1 year 6 months 14 days 1 year 6 months 14 days          
Cash received from the exercise of share options               ¥ 44,275,858 $ 6,439,656 ¥ 69,929,453 21,730,663      
Stock options outstanding               8,453,372   9,090,536        
Share-based Compensation               ¥ 29,307,903 $ 4,262,658 ¥ 64,867,902 203,269,631      
Discontinued Operations [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Share-based Compensation | ¥                     113,701,932      
Stock Options [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Share-based Compensation | $                       $ 1,410,137    
Stock Options [Member] | Officer [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Number of vesting increments 5                          
Options granted       1,352,840 600,000                  
2009 Plan [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Ordinary shares that may be issued                           9,325,122
Contractual life             7 years              
2009 Plan [Member] | Employee [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Options granted             953,200              
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period             36 months              
2014 Plan [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Ordinary shares that may be issued           12,796,745                
Contractual life           10 years                
Exercise price of options granted | $ / shares     $ 5.9275                      
Stock options outstanding   9,472,000                        
Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Incremental Compensation Cost | ¥                     ¥ 19,545,720      
2014 Plan [Member] | Stock Options [Member] | Officer [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Options granted   1,760,000                        
Exercise price of options granted | $ / shares   $ 3.2875 $ 3.2875