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Other Long-term Assets - Additional information (Details) - CNY (¥)
¥ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Housing loans made to employees    
Term of staff housing loan (in years) 5 years  
Staff housing loans outstanding repayable within 12 months ¥ 22.7 ¥ 29.2
Prepayments and other current assets    
Housing loans made to employees    
Staff housing loans outstanding repayable within 12 months ¥ 22.7 ¥ 29.2
Equal to or more than    
Housing loans made to employees    
Interest rate on staff housing loan (as a percent) 2.10% 1.50%
Less than    
Housing loans made to employees    
Interest rate on staff housing loan (as a percent) 4.75% 4.75%