v3.26.3
Concentrations And Risks (Details)
6 Months Ended
Jun. 30, 2026
CNY (¥)
Jun. 30, 2026
USD ($)
Jun. 30, 2025
CNY (¥)
Jun. 30, 2026
USD ($)
Dec. 31, 2025
CNY (¥)
Concentrations and risks          
Revenue ¥ 8,274,218 $ 1,219,469 ¥ 9,383,590    
Accounts receivable, net 6,019,542     $ 887,171 ¥ 6,259,004
Customer risk concentration risk | Customer A          
Concentrations and risks          
Revenue 1,911,957 281,788 1,538,585    
Accounts receivable, net         1,191,850
Customer risk concentration risk | Customer B          
Concentrations and risks          
Revenue     1,419,387    
Accounts receivable, net 6,066,126     $ 894,036 4,843,602
Customer risk concentration risk | Customer C          
Concentrations and risks          
Revenue ¥ 1,219,930 $ 179,795 ¥ 1,646,439    
Customer risk concentration risk | Customer D          
Concentrations and risks          
Accounts receivable, net         ¥ 850,000