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Commitments and contingencies (Tables)
 12 Months Ended
Dec. 31, 2020
Statement [LineItems]  
Future Minimum Lease Payments
The Group has various lease contracts that have not yet commenced as of December 31,
2019 and 
2020. The future lease payments
for
these
non-cancellable
lease contracts are as follows:
 
 
  
31.12.2019
 
  
31.12.2020
 
  
31.12.2020
 
 
  
RMB’000
 
  
RMB’000
 
  
US$’000
 
Within 1 year
  
 
105
 
  
 
321
 
  
 
50
 
After 1 year but within 5 years
  
 
85
 
  
 
1,628
 
  
 
252
 
After 5 years
  
 
—  
 
  
 
71
 
  
 
11
 
   
 
 
   
 
 
   
 
 
 
 
  
 
190
 
  
 
2,020
 
  
 
313