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Summary of Significant Accounting Policies - Property and equipment, net (Details)
Dec. 31, 2023
Electronic equipment | Minimum  
Property, Plant and Equipment [Line Items]  
Estimated useful life of property and equipment 3 years
Electronic equipment | Maximum  
Property, Plant and Equipment [Line Items]  
Estimated useful life of property and equipment 5 years
Machinery and equipment  
Property, Plant and Equipment [Line Items]  
Estimated useful life of property and equipment 10 years
Furniture and fixture  
Property, Plant and Equipment [Line Items]  
Estimated useful life of property and equipment 5 years
Transportation vehicles  
Property, Plant and Equipment [Line Items]  
Estimated useful life of property and equipment 4 years