v3.26.1
Income Taxes - Schedule of Reconciliation Between the Effective Income Tax Rate and the Prc Statutory Income Tax Rate (Details)
12 Months Ended
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2023
CNY (¥)
Schedule of Reconciliation Between the Effective Income Tax Rate and the Prc Statutory Income Tax Rate [Abstract]        
PRC statutory tax rate, Percentage 25.00% 25.00% 25.00% 25.00%
PRC statutory tax rate (in Dollars and Yuan Renminbi) ¥ 52,309,314 $ 7,480,132    
Effect of Cross-border tax laws        
Withholding tax, Percentage 0.00% 0.00% 7.00% 3.00%
Withholding tax (in Dollars and Yuan Renminbi) ¥ (786,901) $ (112,525)    
Effect of international rate differences, Percentage     (2.00%) (2.00%)
Effect of preferential tax rate, Percentage (5.00%) (5.00%) (8.00%) (1.00%)
Effect of preferential tax rate (in Dollars and Yuan Renminbi) ¥ (9,588,668) $ (1,371,161)    
Uncertain tax positions, Percentage     1.00% (3.00%)
Valuation allowances, Percentage 1.00% 1.00% 8.00% 8.00%
Valuation allowances (in Dollars and Yuan Renminbi) ¥ 2,323,319 $ 332,230    
Nontaxable or nondeductible items        
Goodwill impairment, Percentage 8.00% 8.00%    
Goodwill impairment (in Dollars and Yuan Renminbi) ¥ 16,622,750 $ 2,377,022    
Bad debt provision write off not filed, Percentage 4.00% 4.00%    
Bad debt provision write off not filed (in Dollars and Yuan Renminbi) ¥ 7,679,245 $ 1,098,117    
Others, Perentage 1.00% 1.00%    
Others (in Dollars and Yuan Renminbi) ¥ 2,576,467 $ 368,430    
Changes in unrecognized tax benefits, Percentage 8.00% 8.00%    
Changes in unrecognized tax benefits (in Dollars and Yuan Renminbi) ¥ 16,633,267 $ 2,378,526    
Cayman        
Statutory tax rate difference between Cayman and China, Percentage (16.00%) (16.00%)    
Statutory tax rate difference between Cayman and China (in Dollars and Yuan Renminbi) ¥ (34,201,802) $ (4,890,793)    
Other foreign jurisdictions, Percentage 1.00% 1.00%    
Other foreign jurisdictions (in Dollars and Yuan Renminbi) ¥ 2,377,726 $ 340,010    
Others        
Statutory income/expenses, Percentage (17.00%) (17.00%)    
Statutory income/expenses (in Dollars and Yuan Renminbi) ¥ (35,112,478) $ (5,021,018)    
Nol expired, Percentage 13.00% 13.00%    
Nol expired (in Dollars and Yuan Renminbi) ¥ 28,162,314 $ 4,027,157    
others, Percentage (1.00%) (1.00%)    
others (in Dollars and Yuan Renminbi) ¥ (3,114,531) $ (445,372)    
Effective tax rate 22.00% 22.00% 45.00% 31.00%
Income tax expenses (in Dollars and Yuan Renminbi) ¥ 45,880,022 $ 6,560,756 ¥ 88,726,969 ¥ 118,452,255
Deferred tax, Percentage     2.00% (1.00%)
Provision to return, Percentage     1.00%
Non-deductible expenses, Percentage     11.00% 2.00%