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

Summary of Significant Accounting Policies - Lease - Additional Information (Details)

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Summary of Significant Accounting Policies - Lease - Additional Information (Details)
12 Months Ended
Dec. 31, 2020
CNY (¥)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
CNY (¥)
Jan. 01, 2019
CNY (¥)
Operating lease        
Contingent rent ¥ 0      
Finance lease liability ¥ 0   ¥ 0  
Lease practical expedients package true      
Operating lease right-of-use assets ¥ 41,779,086 $ 6,402,925 ¥ 40,786,291  
Operating lease liabilities ¥ 40,977,952      
ASC 842        
Operating lease        
Operating lease right-of-use assets       ¥ 3,500,000
Operating lease liabilities       ¥ 3,000,000
Minimum        
Operating lease        
Operating lease term 12 months 12 months    
Maximum        
Operating lease        
Operating lease term 36 months 36 months