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Leases (Tables)
12 Months Ended
Dec. 31, 2021
Leases [Abstract]  
Summary of Undiscounted Future Minimum Payments under the Group's Operating Lease Liabilities
The undiscounted future minimum payments under the Group’s operating lease liabilities and reconciliation to the operating lease liabilities recognized on the consolidated balance sheets
were
as below:
 
 
 
 
 
 
 
 
 
 
    
RMB
    
US$
 
2022
     110,472        17,335  
2023
     59,238        9,296  
2024
     50,526        7,929  
2025
     29,347        4,605  
2026 and thereafter
     72,078        11,311  
    
 
 
    
 
 
 
Total future lease payments
     321,661        50,476  
Less: imputed interest
     (54,782      (8,597
    
 
 
    
 
 
 
Total lease liability balance
     266,879        41,879