v3.26.1
Leases (Details) - Jun. 30, 2026
USD ($)
CNY (¥)
Leases    
2026 (remaining six months) $ 40,572 ¥ 276,331
Total lease payments 40,572 276,331
Less: Interest (680) (4,631)
Present value of lease liabilities $ 39,892 ¥ 271,700