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Other Non-Current Assets (Tables)
12 Months Ended
Dec. 31, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Summary of Other Non-Current Assets
Other
non-current
assets consist of the following:
 
    
As of December 31,
 
    
2020
    
2021
    
2021
 
    
RMB
    
RMB
    
US$
 
    
(in thousands)
 
Rental deposits
     111,521        167,282        26,250  
Others
     9,938        18,511        2,906  
    
 
 
    
 
 
    
 
 
 
Total
     121,459        185,793        29,156