v3.26.1
CONSOLIDATED BALANCE SHEETS (Parenthetical)
Dec. 31, 2025
CNY (¥)
shares
Dec. 31, 2025
USD ($)
$ / shares
shares
Dec. 31, 2024
CNY (¥)
shares
Derivative instruments ¥ 113,191,365 $ 16,186,150  
Allowance for account receivables, net 236 34 ¥ 274,956
Allowance for other current assets 77,493,926 11,081,484 72,671,045
Fair value of long-term investments 14,700,093 2,102,085 15,163,357
Allowance of other non-current assets 0 0 440,085
Short-term lease liabilities 4,232,810 605,284 18,696,986
Accrued expenses and other current liabilities 290,251,370 41,505,394 262,077,864
Income tax payable 58,155,740 8,316,160 33,422,727
Derivative instruments 52,011,906 7,437,604 89,894,630
Long-term lease liabilities ¥ 655,070 $ 93,674 ¥ 48,706,048
Class A Ordinary shares      
Ordinary shares, par value (in dollars per share) | $ / shares   $ 0.0001  
Ordinary shares, authorized 656,508,828 656,508,828 656,508,828
Ordinary shares, issued 201,304,881 201,304,881 201,304,881
Ordinary shares, outstanding 93,185,285 93,185,285 105,198,013
Class B Ordinary shares      
Ordinary shares, par value (in dollars per share) | $ / shares   $ 0.0001  
Ordinary shares, authorized 63,491,172 63,491,172 63,491,172
Ordinary shares, issued 63,491,172 63,491,172 63,491,172
Ordinary shares, outstanding 63,491,172 63,491,172 63,491,172
Variable Interest Entity      
Derivative instruments ¥ 7,799,642 $ 1,115,334  
Short-term lease liabilities 44,274 6,331 ¥ 67,180
Accrued expenses and other current liabilities 17,207,708 2,460,670 8,233,771
Income tax payable 17,953,357 2,567,296 0
Derivative instruments | ¥     0
Long-term lease liabilities ¥ 0 $ 0 ¥ 0