v3.26.1
Inventories (Details)
12 Months Ended
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2023
CNY (¥)
Dec. 31, 2025
USD ($)
Inventories [Abstract]          
Inventory ¥ 8,280,145   ¥ 9,165,973   $ 1,184,045
Allowance for inventory valuation ¥ 1,883,635 $ 269,355 ¥ 494,459 ¥ 503,079