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Related Party Transactions - Additional Information (Details) - CNY (¥)
¥ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Related Party Transaction [Line Items]      
Donations ¥ 3.5 ¥ 2.8 ¥ 1.2
Shanghai Dingnuo Technology Ltd      
Related Party Transaction [Line Items]      
Service fees paid ¥ 9.2 ¥ 6.0 ¥ 0.0