v3.26.1
OPERATING LEASES - Maturities of lease liabilities (Details) - CNY (¥)
Dec. 31, 2025
Dec. 31, 2024
OPERATING LEASES    
Within 1 year ¥ 3,365,974  
After 1 year but within 2 years 4,030,116  
Total undiscounted lease payment 7,396,090  
Less: Imputed interest (251,990)  
Present value of lease liabilities ¥ 7,144,100 ¥ 1,343,010