v3.26.3
Inventories (Details)
6 Months Ended
Jun. 30, 2026
USD ($)
Jun. 30, 2026
CNY (¥)
Jun. 30, 2025
CNY (¥)
Jun. 30, 2026
CNY (¥)
Dec. 31, 2025
CNY (¥)
Inventory, Net [Abstract]          
Inventory $ 834,243     ¥ 5,660,426 ¥ 8,280,145
Allowance for inventory valuation $ 295,114 ¥ 2,002,377 ¥ 599,926