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Summary of Significant Accounting Policies - Land Use Right, Net (Details) - Land
Dec. 31, 2024
Guangzhou  
Finite-Lived Intangible Assets  
Terms 50 years
Beijing  
Finite-Lived Intangible Assets  
Terms 36 years
Suzhou  
Finite-Lived Intangible Assets  
Terms 30 years
Shanghai  
Finite-Lived Intangible Assets  
Terms 47 years