Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

GOODWILL AND INTANGIBLE ASSETS, NET - Goodwill (Details)

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GOODWILL AND INTANGIBLE ASSETS, NET - Goodwill (Details) - CNY (¥)
1 Months Ended 9 Months Ended 12 Months Ended
Dec. 31, 2017
Nov. 30, 2013
Feb. 28, 2009
Dec. 31, 2017
Dec. 31, 2018
Dec. 31, 2002
Mar. 31, 2017
Goodwill              
Goodwill acquired       ¥ 997,123      
Goodwill ¥ 32,009,025     32,009,025 ¥ 0   ¥ 32,523,983
Disposal of goodwill       ¥ 1,512,081 32,009,025    
ATA Testing              
Goodwill              
Goodwill acquired           ¥ 6,880,123  
Percentage of equity interest acquired           5.00%  
Beijing JDX and JDX BVI              
Goodwill              
Goodwill acquired     ¥ 16,542,727        
Xing Wei              
Goodwill              
Goodwill acquired   ¥ 7,589,052          
Qihuang Huizhi              
Goodwill              
Goodwill acquired ¥ 997,123            
Qihuang Huizhi | ATA Online              
Goodwill              
Goodwill         ¥ 997,123    
Percentage of equity interest acquired 65.00%     65.00%      
Total consideration ¥ 650,000            
Puhua Technology              
Goodwill              
Percentage of equity interest sold 60.00%            
Total consideration ¥ 2,000,000            
Disposal of goodwill ¥ 1,512,081