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Short-Term and Long-Term Debts - Summary of Short-Term Debts (Detail)
12 Months Ended
Dec. 31, 2021
CNY (¥)
Dec. 31, 2020
CNY (¥)
Dec. 31, 2021
USD ($)
Short-term Debt [Line Items]      
Short-term borrowings ¥ 579,776,131 ¥ 355,816,940 $ 90,979,527
Minimum [Member]      
Short-term Debt [Line Items]      
Short-term borrowings, Fixed annual rate 3.75% 3.40% 3.75%
Short-term borrowings, Term 1 month 1 month  
Maximum [Member]      
Short-term Debt [Line Items]      
Short-term borrowings, Fixed annual rate 6.50% 6.80% 6.50%
Short-term borrowings, Term 12 months 12 months