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Income Taxes - Schedule Of Profit Before Income Taxes (Detail)
12 Months Ended
Dec. 31, 2021
CNY (¥)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
CNY (¥)
Dec. 31, 2019
CNY (¥)
Schedule Of Income Before Income Tax [Line Items]        
Profit before income taxes ¥ 12,308,294 $ 1,931,441 ¥ 3,743,273,711 ¥ 487,819,233
Cayman Islands [Member]        
Schedule Of Income Before Income Tax [Line Items]        
Profit before income taxes (37,599,025) (5,900,107) 3,309,525,351 (5,359,465)
Hong Kong [Member]        
Schedule Of Income Before Income Tax [Line Items]        
Profit before income taxes (14,883,394) (2,335,529) (14,414,430) 18,479,616
China [Member]        
Schedule Of Income Before Income Tax [Line Items]        
Profit before income taxes ¥ 64,790,713 $ 10,167,077 ¥ 448,162,790 ¥ 474,699,082