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Intangible Assets, Net (Details) - CNY (¥)
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]    
Less: accumulated amortization ¥ (24,663,009) ¥ (14,319,607)
Intangible assets, net ¥ 96,018,313 77,593,680
Franchise right    
Finite-Lived Intangible Assets [Line Items]    
Weighted-Average Amortization Period (years) 20 years  
Intangible assets, gross ¥ 69,646,000 63,757,000
Upfront franchise fees    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, gross ¥ 51,035,322 ¥ 28,156,287
Minimum | Upfront franchise fees    
Finite-Lived Intangible Assets [Line Items]    
Weighted-Average Amortization Period (years) 2 years  
Maximum | Upfront franchise fees    
Finite-Lived Intangible Assets [Line Items]    
Weighted-Average Amortization Period (years) 12 years