v3.26.1
SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF PARENT COMPANY - BALANCE SHEETS (Details)
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2023
CNY (¥)
Assets:        
Cash and cash equivalents ¥ 987,630,978 $ 141,229,352 ¥ 984,611,409 ¥ 1,195,351,730
Prepaid expenses and other current assets 43,546,807 6,227,111 34,078,494  
Total assets 14,665,744,467 2,097,173,566 11,819,289,603  
Liabilities:        
Accrued expenses and other current liabilities 1,041,055,440 148,868,948 929,490,436  
Total liabilities 6,828,943,830 976,525,980 4,866,134,961  
Equity:        
Common shares 206,793 29,571 206,793  
Treasury stock (967,773,090) (138,389,711) (509,643,763)  
Additional paid-in capital 3,256,349,216 465,651,744 3,207,028,391  
Retained earnings 5,484,293,291 784,243,511 4,174,511,191  
Accumulated other comprehensive income 63,724,427 9,112,471 81,052,030  
Total equity 7,836,800,637 1,120,647,586 6,953,154,642  
Total liabilities and equity 14,665,744,467 2,097,173,566 11,819,289,603  
Parent Company | Reportable legal entity        
Assets:        
Cash and cash equivalents 7,934,940 1,134,681 1,359,623  
Prepaid expenses and other current assets 500,011 71,501 390,721  
Amount due from subsidiaries and VIEs 324,658,501 46,425,548 910,228,376  
Investments in subsidiaries and VIEs 7,503,918,049 1,073,046,009 6,286,783,144  
Total assets 7,837,011,501 1,120,677,739 7,198,761,864  
Liabilities:        
Accrued expenses and other current liabilities 210,864 30,153 245,607,222  
Total liabilities 210,864 30,153 245,607,222  
Equity:        
Common shares 206,793 29,571 206,793  
Treasury stock (967,773,090) (138,389,711) (509,643,763)  
Additional paid-in capital 3,256,349,216 465,651,744 3,207,028,391  
Retained earnings 5,484,293,291 784,243,511 4,174,511,191  
Accumulated other comprehensive income 63,724,427 9,112,471 81,052,030  
Total equity 7,836,800,637 1,120,647,586 6,953,154,642  
Total liabilities and equity ¥ 7,837,011,501 $ 1,120,677,739 ¥ 7,198,761,864