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Intangible Assets, Net (Tables)
 6 Months Ended
Jun. 30, 2024
Intangible Assets, Net [Abstract]  
Schedule of Intangible Assets The following table presents the Group’s intangible assets as of the respective balance sheet dates:
   Purchased
software		   Internal - use
software		   Total   Total 
   RMB   RMB   RMB   US$ 
Net balance as of December 31, 2023   201    
          -
    201    28 
Additions   
-
    
-
    
-
    
-
 
Amortization expense   (34)   
-
    (34)   (5)
Net balance as of June 30, 2024   167    
-
    167    23 
Schedule of Estimated Amortization Expenses for the Intangible Assets The annual estimated amortization expenses for the intangible assets for each of the next five years are as follows:
   RMB   US$ 
2024 (July – December)   36    5 
2025   70    10 
2026   61    8 
    167    23