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Intangible assets, net
 12 Months Ended
Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible assets, net
11.Intangible assets, net

Intangible assets, net, consist of the following:


   As of December 31, 
   2019   2020 
   RMB’000   RMB’000 
Trademark   16,200    16,200 
Backlog   5,815    5,815 
Customer relationship   11,400    11,400 
Reacquired right   200    200 
Total cost   33,615    33,615 
           
Less: accumulated amortization   8,647    14,278 
           
Intangible assets, net   24,968    19,337 

Trademark, backlog, customer relationship and favourable lease contracts were recorded as a result of business acquisitions as disclosed in note 5.


The Group recorded amortization expense of RMB 4,076, RMB 5,831 and RMB5,631 for the years ended December 31, 2018, 2019 and 2020, respectively.


Estimated amortization expense of the existing intangible assets for the next five years is RMB 4,662, RMB 3,693, RMB 3,693, RMB 1,620 and RMB 1,620 respectively.