v3.26.1
REVENUE INFORMATION - Revenues based on geographic areas (Details)
12 Months Ended
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2023
CNY (¥)
REVENUE INFORMATION        
Revenues ¥ 4,307,865,498 $ 616,016,573 ¥ 3,288,296,344 ¥ 2,651,757,646
Mainland China        
REVENUE INFORMATION        
Revenues 4,003,396,070   2,845,174,856 2,247,593,239
Europe        
REVENUE INFORMATION        
Revenues 177,783,756   172,195,656 151,521,237
Others        
REVENUE INFORMATION        
Revenues ¥ 126,685,672   ¥ 270,925,832 ¥ 252,643,170