XML 105 R83.htm IDEA: XBRL DOCUMENT v3.25.1
Income Taxes - Summary of reconciliation of income taxes expenses (Details)
12 Months Ended
Dec. 31, 2024
CNY (¥)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
CNY (¥)
Dec. 31, 2022
CNY (¥)
Effective Income Tax Rate Reconciliation, Amount        
Profit (loss) before income tax ¥ (157,537,018) $ (21,582,482) ¥ (101,474,055) ¥ 269,623,829
PRC statutory income tax rate 25.00% 25.00% 25.00% 25.00%
Income tax expense (benefit) at PRC statutory income tax rate ¥ 39,384,255 $ 5,395,621 ¥ 25,368,514 ¥ (67,405,957)
Effect of different tax rates (97,962,122) (13,420,756) (25,070,403) 12,944,788
Tax exempted income (113,208,078) (15,509,443) (198,231)  
Outside basis difference     (215,985,749) (109,594,486)
Expenses not deductible for tax purposes 13,122,045 1,797,713 36,882,867 12,666,674
Adjustment on current income tax of the previous periods     (18,394,143) (18,081,862)
Non-deductible guarantee liability:     93,833,446  
Write-off of NOL and others 450,292,380 61,689,803 252,778,471  
Withholding income tax 23,250,000 3,185,237 4,427,205  
Changes in valuation allowance (249,072,857) (34,122,842) (91,301,461) 261,898,970
Income tax expenses ¥ 65,805,623 $ 9,015,333 ¥ 62,340,516 ¥ 92,428,127