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Property and Equipment, Net
12 Months Ended
Dec. 31, 2020
Property, Plant and Equipment [Abstract]  
PROPERTY AND EQUIPMENT, NET
7. PROPERTY AND EQUIPMENT, NET

Property and equipment, including those held under capital leases, consists of the following:


   As of December 31, 
   2019   2020   2020 
   RMB   RMB   USD 
At cost:                
Computer and transmission equipment    5,246    6,640    1,018 
Furniture, fixtures and office equipment   311    427    65 
Total    5,557    7,067    1,083 
Less: accumulated depreciation    (4,821)   (5,711)   (875)
Property and equipment, net    736    1,356    208 

For the years ended December 31, 2018, 2019 and 2020, depreciation expense was RMB1,167, RMB655 and RMB555 (US$85), respectively.