v3.26.1
Taxes - Schedule of Reconciliation of Differences Between Statutory Income Tax (Details)
12 Months Ended
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2023
CNY (¥)
Schedule Of Reconciliation Of Differences Between Statutory Income Tax Abstract        
PRC income tax statutory rate 25.00% 25.00% 25.00% 25.00%
PRC income tax statutory rate (in Dollars and Yuan Renminbi) ¥ 25 $ 25    
Computed income tax benefit with PRC statutory income tax rate 25.00% 25.00%    
Computed income tax benefit with PRC statutory income tax rate (in Dollars and Yuan Renminbi) ¥ (32,732,887) $ (4,680,740)    
Non-deductible expenses (2.82%) (2.82%) (8.04%) (10.76%)
Non-deductible expenses (in Dollars and Yuan Renminbi) ¥ 3,698,281 $ 528,846    
Non-deductible interest expense (2.09%) (2.09%) (6.19%) (9.83%)
Non-deductible interest expense (in Dollars and Yuan Renminbi) ¥ 2,730,350 $ 390,435    
Non-deductible entertainment expense (0.52%) (0.52%) (1.19%) (0.67%)
Non-deductible entertainment expense (in Dollars and Yuan Renminbi) ¥ 675,841 $ 96,644    
Others (0.22%) (0.22%) (0.66%) (0.26%)
Others (in Dollars and Yuan Renminbi) ¥ 292,090 $ 41,767    
Effect of preferential tax rate (4.63%) (4.63%) (6.40%) (6.21%)
Effect of preferential tax rate (in Dollars and Yuan Renminbi) ¥ 6,058,580 $ 866,365    
Prior year true up of NOL (0.82%) (0.82%) (1.93%) (31.15%)
Prior year true up of NOL (in Dollars and Yuan Renminbi) ¥ 1,073,852 $ 153,559    
Expiration of NOL (0.01%) (0.01%) (5.42%) (2.38%)
Expiration of NOL (in Dollars and Yuan Renminbi) ¥ 7,824 $ 1,120    
Changes in tax rates enacted in the current period    
Changes in tax rates enacted in the current period (in Dollars and Yuan Renminbi)    
Change in valuation allowance (7.30%) (7.30%) (3.21%) 25.50%
Change in valuation allowance (in Dollars and Yuan Renminbi) ¥ 9,558,144 $ 1,366,796    
Foreign tax effects (9.42%) (9.42%)    
Foreign tax effects (in Dollars and Yuan Renminbi) ¥ 12,336,581 $ 1,764,108    
Statutory tax rate difference between Cayman and PRC (9.42%) (9.42%)    
Statutory tax rate difference between Cayman and PRC (in Dollars and Yuan Renminbi) ¥ 12,336,967 $ 1,764,163    
Statutory tax rate difference between HK and PRC 0.00% 0.00%    
Statutory tax rate difference between HK and PRC (in Dollars and Yuan Renminbi) ¥ (386) $ (55)    
Income tax expense 0.00% 0.00%
Income tax expense (in Dollars and Yuan Renminbi) ¥ 375 $ 54
Loss before income tax expense 100.00% 100.00%    
Loss before income tax expense (in Dollars and Yuan Renminbi) ¥ (130,931,546) $ (18,722,961) ¥ (37,365,434) ¥ (36,949,421)