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

Description of Business, Organization and Significant Concentrations and Risk - VIE Agreements - Additional Information (Details)

v3.21.1
Description of Business, Organization and Significant Concentrations and Risk - VIE Agreements - Additional Information (Details)
12 Months Ended
Aug. 17, 2020
CNY (¥)
Aug. 12, 2020
Aug. 11, 2020
Mar. 15, 2018
CNY (¥)
Dec. 31, 2020
CNY (¥)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
CNY (¥)
Mar. 19, 2019
CNY (¥)
Dec. 28, 2018
CNY (¥)
Mar. 31, 2018
CNY (¥)
Variable Interest Entity                    
Assets         ¥ 575,621,032 $ 88,217,783 ¥ 676,089,833      
ATA Intelligent Learning's nominee shareholders, Mr. Xiaofeng Ma, Mr. Haichang Xiong and Mr. Jun Zhang                    
Variable Interest Entity                    
Loan amount         ¥ 10,000,000     ¥ 50,000,000   ¥ 10,000,000
Term of loan         10 years          
ATA Intelligent Learning's nominee shareholders, Mr. Xiaofeng Ma, Mr. Haichang Xiong and Mr. Jun Zhang | Loan on March 15, 2018                    
Variable Interest Entity                    
Loan amount       ¥ 1,000,000            
ATA Intelligent Learning's nominee shareholders, Mr. Xiaofeng Ma, Mr. Haichang Xiong and Mr. Jun Zhang | Loan on December 28, 2018                    
Variable Interest Entity                    
Loan amount                 ¥ 9,000,000  
ATA Intelligent Learning's nominee shareholders, Mr. Xiaofeng Ma, Mr. Haichang Xiong and Mr. Jun Zhang | Loan Agreement On March192019                    
Variable Interest Entity                    
Loan amount         ¥ 40,000,000          
ATA Intelligent Learning                    
Variable Interest Entity                    
Registered capital         50,000,000          
Assets         75,948,774   ¥ 90,059,414      
ATA Intelligent Learning | Assets Pledged as collateral                    
Variable Interest Entity                    
Assets         ¥ 0          
ATA Intelligent Learning | ATA Education                    
Variable Interest Entity                    
Percentage of equity interest that can be acquired as per exclusive purchase option         100.00%          
Term of agreement       30 years            
Notice period prior to expiration of agreement         30 days          
ATA Intelligent Learning | ATA Education | Exclusive technical consulting and services agreement                    
Variable Interest Entity                    
Automatic renewal term of the agreement       10 years            
Notice period prior to expiration of agreement       3 months            
Mr. Xiaofeng Ma | ATA Intelligent Learning | Minimum                    
Variable Interest Entity                    
Legal ownership         40.00% 40.00% 40.00%      
Mr. Xiaofeng Ma | ATA Intelligent Learning                    
Variable Interest Entity                    
Legal ownership interest (as a percent)         90.00%          
Mr. Haichang Xiong | ATA Intelligent Learning's nominee shareholders, Mr. Xiaofeng Ma, Mr. Haichang Xiong and Mr. Jun Zhang                    
Variable Interest Entity                    
Repayment of short-term borrowings ¥ 5,000,000                  
Mr. Haichang Xiong | ATA Intelligent Learning                    
Variable Interest Entity                    
Legal ownership interest (as a percent)     10.00%              
Mr. Jun Zhang | ATA Intelligent Learning's nominee shareholders, Mr. Xiaofeng Ma, Mr. Haichang Xiong and Mr. Jun Zhang                    
Variable Interest Entity                    
Proceeds from Issuance of Debt ¥ 5,000,000                  
Mr. Jun Zhang | ATA Intelligent Learning                    
Variable Interest Entity                    
Legal ownership interest (as a percent)   10.00%