v3.26.1
Property, Plant and Equipment, Net - Schedule of Property and Equipment, Net (Details)
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
CNY (¥)
Schedule of Property and Equipment, Net [Line Items]      
Property and equipment, gross ¥ 1,449,190,807 $ 207,231,530 ¥ 1,509,339,910
Less:      
Accumulated depreciation (911,724,012) (130,374,800) (862,489,629)
Construction in progress 22,452,162 3,210,616 2,677,929
Property, plant and equipment, net 559,918,957 80,067,346 649,528,210
Land [Member]      
Schedule of Property and Equipment, Net [Line Items]      
Property and equipment, gross 49,781,793 7,118,702 40,972,933
Buildings and plants [Member]      
Schedule of Property and Equipment, Net [Line Items]      
Property and equipment, gross 570,890,182 81,636,210 562,423,983
Leasehold improvements [Member]      
Schedule of Property and Equipment, Net [Line Items]      
Property and equipment, gross 577,902,065 82,638,897 651,694,871
Furniture, fixtures and equipment [Member]      
Schedule of Property and Equipment, Net [Line Items]      
Property and equipment, gross 241,453,078 34,527,331 244,771,734
Motor vehicles [Member]      
Schedule of Property and Equipment, Net [Line Items]      
Property and equipment, gross ¥ 9,163,689 $ 1,310,390 ¥ 9,476,389