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Intangible Assets (Tables)
12 Months Ended
Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Summary of Finite Lived Intangible Assets
The following table summarizes the Group’s intangible assets:
                 
    
December 31,

2020
    
December 31,

2021
 
    
RMB
    
RMB
 
Gross carrying amount
                 
Copyright
     8,488        8,492  
Software
     2,851        3,080  
Trademark and others
     2,446        3,215  
    
 
 
    
 
 
 
Total gross carrying amount
  
 
13,785
 
  
 
14,787
 
    
 
 
    
 
 
 
Less: accumulated amortization
                 
Copyright
     (8,468      (8,696
Software
     (1,503      (2,032
Trademark and others
     (885      (1,814
    
 
 
    
 
 
 
Total accumulated amortization
  
 
(10,856
  
 
(12,542
    
 
 
    
 
 
 
Intangible assets, net
  
 
2,929
 
  
 
2,245
 
    
 
 
    
 
 
 
Summary of Finite-Lived Intangible Assets, Future Amortization Expense
The estimated amortization expenses for each of the following five years are as follows:
         
    
Amortization expense

of intangible assets
 
    
RMB
 
2022
     1,276  
2023
     660  
2024
     204  
2025
     91  
2026
     14