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Property and Equipment, Net - Schedule of Property and Equipment (Details)
¥ in Thousands, $ in Thousands
Dec. 31, 2021
CNY (¥)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
CNY (¥)
Property Plant And Equipment [Line Items]      
Less: Accumulated depreciation and impairment ¥ (111,493) $ (17,495) ¥ (96,419)
Total property and equipment, net 62,179 9,757 73,522
Office Furniture and Equipment      
Property Plant And Equipment [Line Items]      
Property and equipment, gross 4,744 744 4,414
Computer Equipment and Servers      
Property Plant And Equipment [Line Items]      
Property and equipment, gross 163,392 25,640 162,587
Leasehold Improvements      
Property Plant And Equipment [Line Items]      
Property and equipment, gross 5,451 855 100
Construction in Progress [Member]      
Property Plant And Equipment [Line Items]      
Property and equipment, gross ¥ 85 $ 13 ¥ 2,840