v3.22.2.2
Loss per share (Tables)
 6 Months Ended
Jun. 30, 2022
Earnings Per Share [Abstract]  
Basic and Diluted Loss Per Share
Basic and diluted loss per share is calculated as follows:
 
     For the six months ended June 30,  
     2021     2022  
     Class A     Class B     Class A     Class B  
     RMB     RMB     RMB     US$     RMB     US$  
Numerator:
                                                 
Net loss attributable to Class A and Class B common shareholders
      (54,429 )      (15,005 )      (41,785 )      (6,238 )      (11,439 )      (1,708 ) 
Net loss attributable to common shareholders
      (54,429 )      (15,005 )      (41,785 )      (6,238 )      (11,439 )      (1,708 ) 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
  
Denominator:
                                                 
Weighted average number of shares used in calculating basic and diluted loss per share
      61,668,577       17,000,189       62,098,973       62,098,973       17,000,189       17,000,189  
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
  
Basic and diluted loss per share
      (0.88 )      (0.88 )      (0.67 )      (0.10 )      (0.67 )      (0.10 )