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Investment property (Tables)
 12 Months Ended
Dec. 31, 2022
Statement [Line Items]  
Summary of Investment Property
    
31.12.2021
     
31.12.2022
     
31.12.2022
  
    
RMB’000
     
RMB’000
     
US$’000
  
Cost
                           
At January 1
      33,187        31,810        4,575  
Translation difference
      (1,377 )       579        84  
    
 
 
     
 
 
     
 
 
  
At December 31
      31,810        32,389        4,659  
    
 
 
     
 
 
     
 
 
  
Accumulated depreciation
                           
At January 1
      27,358        26,724        3,844  
Charge for the year
      355        348        50  
Translation difference
      (989 )       561        81  
 
 
 
 
 
 
 
 
 
 
 
 
 
At December 31
      26,724        27,633        3,975  
 
 
 
 
 
 
 
 
 
 
 
 
 
Net carrying amount
      5,086        4,756        684  
 
 
 
 
 
 
 
 
 
 
 
 
 
Fair value
      11,308        11,686        1,681  
 
  
 
 
 
  
 
 
 
  
 
 
 
Consolidated statements of profit or loss:
                           
Rental income from an investment property
      77        176        25  
Direct operating expenses (including repairs, maintenance and depreciation expense) arising from the rental generating property
      (82 )       (118 )       (17 ) 
 
  
 
 
 
  
 
 
 
  
 
 
 
Summary of Fair Value Measurement of Investment Property
The following table shows information about fair value measurement of the investment property using significant unobservable inputs (Level 3):
 
    
Valuation techniques
   
Unobservable input
   
Inter-relationship between key
unobservable inputs and fair
value measurement
2022
    Market comparison and cost method    Comparable price:
-  RMB 182 to RMB 441
(US$ 26 to US$ 63) per square foot
   The estimated fair value increases with higher comparable price
       
2021
    Market comparison and cost method   
Comparable price:
-  RMB 165 to RMB 401
per square foot
    The estimated fair value increases with higher comparable price