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Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2021
Accounting Policies [Abstract]  
Schedule of Estimated Useful Lives of Property and Equipment The estimated useful lives of property and equipment are as follows:
 
Computer equipment and servers    3 – 5 years
Office furniture and equipment    3 – 5 years
Leasehold improvements    over the shorter of lease terms or estimated useful lives of the assets
Schedule Of Estimated Useful Lives Of Intangible Assets All intangible assets with finite lives are amortized using the straight-line method over the estimated economic lives, which are as follows:
Acquired computer software, systems and technology 1 – 5 years
Residual values are considered nil.
Summary of Contract Liabilities summary of contract liabilities is as follows:
 
 
  
As of December 31,
 
 
  
2020
 
  
2021
 
 
  
RMB
 
  
RMB
 
  
US$
 
Contract liabilities
      71,141        80,405        12,617