v3.26.3
Significant Accounting Policies (Details)
6 Months Ended 12 Months Ended
Jun. 30, 2026
CNY (¥)
Jun. 30, 2026
CNY (¥)
Dec. 31, 2025
CNY (¥)
Dec. 31, 2024
CNY (¥)
Jun. 30, 2026
USD ($)
Jun. 30, 2026
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2025
CNY (¥)
Significant Accounting Policies [Line Items]                
Bank and demand deposits         $ 2,940,000 ¥ 19,900,000 $ 140,000 ¥ 1,000,000
Lease term   12 months            
Percentage of quantitative threshold         5.00% 5.00%    
Advances from customers amounted   ¥ 7,463,000 ¥ 189,000        
Percentage of total prepayments   100.00%            
Amount of suppliers   ¥ 206,301,000            
Prepaid amounts           ¥ 165,269,000    
Percentage of contract value   80.11%            
Subscription consideration ¥ 825,542,000            
Beijing Fanyi Trading Co., Ltd. [Member]                
Significant Accounting Policies [Line Items]                
Prepaid amounts           28,608,000    
Percentage of contract value   17.31%            
Hangzhou Guihang Trading Co., Ltd. [Member]                
Significant Accounting Policies [Line Items]                
Prepaid amounts           ¥ 136,661,000    
Percentage of contract value   82.69%            
US [Member]                
Significant Accounting Policies [Line Items]                
Convenience translation         1 1    
RMB [Member]                
Significant Accounting Policies [Line Items]                
Convenience translation         6.7851 6.7851    
Customer Concentration Risk [Member] | Five Customers [Member] | Revenue Benchmark [Member]                
Significant Accounting Policies [Line Items]                
Percentage of revenue   61.94%            
Supplier Concentration Risk [Member] | Five Customers [Member] | Revenue Benchmark [Member]                
Significant Accounting Policies [Line Items]                
Percentage of revenue   68.57%