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Short-Term and Long-Term Debts - Additional Information (Detail)
Dec. 31, 2021
CNY (¥)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
CNY (¥)
Weighted average interest rate for outstanding debts 5.72% 5.72% 5.92%
Short-term borrowings ¥ 579,776,131 $ 90,979,527 ¥ 355,816,940
Long term debt 1,424,386,034 223,517,251 2,206,574,921
Unused lines of Credit [Member]      
Short-term borrowings 615,000,000 96,000,000 705,000,000
Long term debt 1,012,000,000 159,000,000 193,000,000
Lease Financing [Member]      
Financing lease receivables, collateralized 945,403,768 148,354,481 1,083,014,892
Long term debt ¥ 0 $ 0 ¥ 401,761,874