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Other Long-term Assets - Additional information (Details) - CNY (¥)
¥ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Housing loans made to employees    
Term of staff housing loan (in years) 5 years  
Staff housing loans outstanding repayable within 12 months ¥ 18.2 ¥ 22.7
Prepayments and other current assets    
Housing loans made to employees    
Staff housing loans outstanding repayable within 12 months ¥ 18.2 ¥ 22.7
Equal to or more than    
Housing loans made to employees    
Interest rate on staff housing loan (as a percent) 2.10% 2.10%
Less than    
Housing loans made to employees    
Interest rate on staff housing loan (as a percent) 4.75% 4.75%