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Accrued Expenses and Other Current Liabilities - Summary of Accrued Expenses and Other Current Liabilities (Detail)
Dec. 31, 2021
CNY (¥)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
CNY (¥)
Accounts Payable And Accrued Liabilities Current [Line Items]      
Short-term contract liability ¥ 325,857,410 $ 51,134,138 ¥ 113,860,926
Notes Payable 123,803,438 19,427,461  
Payable to dealers 50,680,407 7,952,862 37,610,651
Customer advances 77,811,758 12,210,363 23,032,980
Payable to employees 34,285,667 5,380,169 66,058,774
Deposit due to third-parties 18,891,289 2,964,455 19,105,683
Other tax payables 16,494,783 2,588,391 26,851,725
Accrued professional service fees 8,697,657 1,364,852 4,630,000
Derivative financial liability 5,346,389 838,965  
Payable to suppliers 4,003,912 628,301 5,090,553
Interest payable 2,667,405 418,574 1,237,131
Others 50,495,262 7,923,811 27,255,779
Accrued expenses and other current liabilities 719,035,377 112,832,342 324,734,202
Restricted cash deposited as collateral for such notes payable 51,793,630 8,127,551 0
Unused lines of Credit [Member]      
Accounts Payable And Accrued Liabilities Current [Line Items]      
Notes Payable ¥ 921,000,000 $ 145,000,000 ¥ 38,000,000