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

Long-term Investments - Equity Method Investments - Additional Information (Details)

v3.20.1
Long-term Investments - Equity Method Investments - Additional Information (Details)
1 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2015
USD ($)
item
$ / shares
shares
Dec. 31, 2017
CNY (¥)
Dec. 31, 2019
CNY (¥)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
CNY (¥)
Equity method investments          
Share of loss recognized   ¥ 1,395,234 ¥ 7,850 $ 1,128  
Brilent Inc. ("Brilent")          
Equity method investments          
Share of loss recognized   1,395,234 0   ¥ 0
Impairment loss   ¥ 4,757,972      
Equity method investments     ¥ 0   ¥ 0
Brilent Inc. ("Brilent") | ATA BVI          
Equity method investments          
Percentage of equity interest 15.47%        
Number of board seat held | item 1        
Total number of board seat | item 6        
Brilent Inc. ("Brilent") | ATA BVI | Preferred Shares          
Equity method investments          
Number of shares purchased | shares 2,156,721        
Purchase price (USD per share) | $ / shares $ 0.6955        
Total consideration | $ $ 1,500,000