v3.26.1
Loans (Details)
12 Months Ended
Mar. 23, 2026
CNY (¥)
Mar. 21, 2026
CNY (¥)
Mar. 16, 2026
CNY (¥)
Mar. 12, 2026
CNY (¥)
Mar. 09, 2026
CNY (¥)
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2023
CNY (¥)
Loans [Line Items]                  
Repaid           ¥ 1,000,000 $ 142,998 ¥ 847,295
Interest expenses           ¥ 3,940,362 $ 563,464 ¥ 3,632,425 ¥ 3,002,241
Subsequent Event [Member]                  
Loans [Line Items]                  
Repaid ¥ 50,000 ¥ 300,000 ¥ 250,000 ¥ 20,000,000 ¥ 20,000,000