v3.26.1
Leases (Details) - Dec. 31, 2025
USD ($)
CNY (¥)
Leases    
2026 $ 77,295 ¥ 543,288
2027 34,612 243,281
2028
Thereafter
2030
Total lease payments 111,907 786,569
Less: Interest 2,088 14,677
Present value of lease liabilities $ 109,819 ¥ 771,892