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) - CNY (¥)
 12 Months Ended
Dec. 31, 2019
Jan. 01, 2019
Operating lease    
Contingent rent ¥ 0  
Finance lease liability ¥ 0  
Lease practical expedients package true  
Operating lease right-of-use assets ¥ 40,786,291  
Operating lease liabilities ¥ 33,056,137  
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  
Maximum    
Operating lease    
Operating lease term 36 months