v3.26.1
Prepayments and Other Current Assets (Tables)
12 Months Ended
Dec. 31, 2025
Prepaid Expense and Other Assets, Current [Abstract]  
Summary of Prepayments and Other Current Assets
Prepayments and other current assets consisted of the following:
 
    
As of December 31,
 
    
2024
    
2025
 
    
RMB
    
RMB
    
US$
 
Value-added tax
     22,706        45,741        6,541  
Prepayment for acquisition of inventories
     20,048        32,726        4,680  
Right to recover inventories (i)
     —         30,326        4,337  
Prepayment for services
     6,733        24,716        3,534  
Insurance claims receivable
     —         2,230        319  
Loans and interest receivable from a related party (Note 18(5))
     —         2,070        296  
Prepayment for an equity investment
     2,000        2,000        286  
Foreign exchange forward contract
     8        314        45  
Deposits
     16,082        308        44  
Others
     721        491        69  
  
 
 
    
 
 
    
 
 
 
    
68,298
    
140,922
    
20,151
 
  
 
 
    
 
 
    
 
 
 
 
  (i)
For contracts with certain customers where collectability is not probable to support the establishment of contract at contract inception, and no revenue was recognized, the Group recorded the right to recover the transferred inventories as stipulated in the contracts or by relevant laws. As of December 31, 2024 and 2025, right to recover inventories were nil and
RMB30,326 (US$4,337), respectively.