v3.26.1
Leases (Tables)
 12 Months Ended
Dec. 31, 2025
Leases [Abstract]  
Schedule of Supplemental Balance Sheet Information Related to Operating Leases

As of December 31, 2024 and 2025, supplemental balance sheet information related to operating leases was as follows:

 

   As of December 31, 
   2024   2025 
   RMB   RMB   US$ 
Right-of-use assets, net           -    469    67 
Operating lease liabilities - current   -    106    15 
Operating lease liabilities - non-current   -    327    47 
Total operating lease liabilities   -    433    62 
Schedule of Weighted Average Remaining Lease Terms and Discount Rates

The weighted average remaining lease terms and discount rates for all of operating lease as of December 31, 2025 were as follows:

 

   December 31,
2025		 
Weighted-average remaining lease term (years):    
Operating lease   9.33 years 
      
Weighted average discount rate:     
Operating leases   4.0%
Schedule of Lease Maturity
Twelve months ending December 31,  RMB   US$ 
2026   120    17 
2027   38    5 
2028   38    5 
2029   38    5 
2030   38    5 
Thereafter   246    35 
Total future minimum lease payments   518    72 
Less: imputed interest   (85)   (10)
Present value of operating lease liabilities   433    62