v3.26.1
Property and equipment, net (Details)
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
CNY (¥)
Property and equipment, net      
Property and equipment, gross ¥ 1,777,398,351 $ 254,164,584 ¥ 1,641,782,323
Less accumulated depreciation 98,571,734 14,095,570 54,915,306
Less impairment 833,390 119,174 833,390
Property and equipment, net 1,677,993,227 239,949,840 1,586,033,627
Construction in progress      
Property and equipment, net      
Property and equipment, gross     1,302,148,272
Leasehold improvements      
Property and equipment, net      
Property and equipment, gross 13,615,929 1,947,052 15,967,920
Office and electronic equipment      
Property and equipment, net      
Property and equipment, gross 9,951,202 1,423,003 11,704,829
Motor vehicles      
Property and equipment, net      
Property and equipment, gross 10,553,180 1,509,085 13,402,055
Aircraft      
Property and equipment, net      
Property and equipment, gross 172,729,570 24,700,000 180,292,710
Buildings      
Property and equipment, net      
Property and equipment, gross ¥ 1,570,548,470 $ 224,585,444 ¥ 118,266,537