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Segment Information
 9 Months Ended
Sep. 30, 2020
Segment Reporting [Abstract]  
Segment Information
16. Segment Information
Operating segments are defined as components of an enterprise about which separate financial information is available that is evaluated regularly by the chief operating decision maker (“CODM”), or decision-making group, in deciding how to allocate resources and in assessing performance. The Group’s CODM is the Chief Executive Officer. The Group’s organizational structure is based on a number of factors that the CODM uses to evaluate, view and run its business operations which include, but are not limited to, customer base, homogeneity of products and technology. The Group’s operating segments are based on this organizational structure and information reviewed by the Group’s CODM to evaluate the operating segment results.
The Group reports two reportable segments-learning services and products and online marketing services. The Group currently does not allocate operating expenses or assets to its segments, as its CODM does not use such information to allocate resources or evaluate the performance of the operating segments.
The table below provides a summary of the Group’s segment results for the nine months ended September 30, 2019 and 2020.
 
    
For the nine months ended
September 30,
  
    
2019
    
2020
  
    
RMB
    
RMB
  
Net revenues
                 
Learning services and products
      539,957       1,725,672  
Online marketing services
      354,494       335,047  
    
 
 
    
 
 
  
Total net revenues
   
 
894,451
 
  
 
2,060,719
 
    
 
 
    
 
 
  
Cost of revenues
                 
Learning services and products
      400,035       885,756  
Online marketing services
      246,224       246,146  
    
 
 
    
 
 
  
Total cost of revenues
   
 
646,259
 
  
 
1,131,902
 
    
 
 
    
 
 
  
Gross margin
                 
Learning services and products
      26 %      49 % 
Online marketing services
      31 %      27 % 
Total gross margin
   
 
28
% 
  
 
45
%