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Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2022
Commitments and Contingencies Disclosure [Abstract]  
Summary of Leases of Lessee
The Group and a third-party investor entered into an investment agreement to establish an investee with a certain payment schedule (Note 10). The following table sets forth our contractual obligations as of December 31, 2022.
 
    
RMB
    
US$
 
2023
     1,750        254  
2024
     1,750        254  
    
 
 
    
 
 
 
Total
  
 
3,500
 
  
 
508