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Land use rights, net
12 Months Ended
Dec. 31, 2021
Land use rights, net  
Land use rights, net
12. Land use rights, net
Land use rights, net consist of the following:
 
    
As of December 31,
 
    
2020
    
2021
 
               
    
(RMB in millions)
 
Land use rights
     11,787        15,253  
Less: accumulated amortization
     (662      (925
    
 
 
    
 
 
 
Net book value
     11,125                14,328  
    
 
 
    
 
 
 
Amortization expenses for land use rights were RMB222 million, RMB229 million and RMB276
million for the years ended December 31, 2019, 2020 and 2021, respectively. No impairment charge was recorded for the years ended December 31, 2019, 2020 and 2021, respectively.
As of December 31, 2021, amortization expenses related to the land use rights for future periods are estimated to be as follows:
 
    
For the year ended December 31,
 
    
2022
    
2023
    
2024
    
2025
    
2026
    
2027 and
thereafter
 
                                           
    
(RMB in millions)
 
Amortization expenses
     319        319        319        319        319        12,733