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Principal Accounting Policies - Schedule of Estimated Useful Lives of Property, Plant and Equipment (Detail)
12 Months Ended
Dec. 31, 2022
Leasehold improvements  
Property, Plant and Equipment [Line Items]  
Estimated Useful Lives the shorter of their useful lives or the lease terms
Computers and electronic equipment  
Property, Plant and Equipment [Line Items]  
Estimated Useful Lives 3 years
Furniture  
Property, Plant and Equipment [Line Items]  
Estimated Useful Lives 3-5 years
Software  
Property, Plant and Equipment [Line Items]  
Estimated Useful Lives 3 years