v3.26.1
Inventories (Details)
Jun. 30, 2026
USD ($)
Jun. 30, 2026
CNY (¥)
Dec. 31, 2025
CNY (¥)
Inventory Disclosure [Abstract]      
Raw materials $ 68,741 ¥ 468,189 ¥ 788,957
Finished goods 658 4,483 4,483
Total 69,399 472,672 793,440
Less: Inventory allowance (68,818) (468,713) (675,697)
Inventories, net $ 581 ¥ 3,959 ¥ 117,743