v3.25.3
Bank loans - Additional Information (Details)
¥ in Thousands, $ in Thousands
6 Months Ended
Jun. 30, 2025
CNY (¥)
item
Mar. 31, 2025
CNY (¥)
Jan. 31, 2025
CNY (¥)
Jan. 31, 2025
USD ($)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2024
USD ($)
Nov. 30, 2024
CNY (¥)
Sep. 30, 2024
CNY (¥)
Disclosure of detailed information about borrowings [line items]                
Principal amount     ¥ 359 $ 50 ¥ 14,600 $ 2,000    
Long-term bank loan ¥ 47,534       50,040      
Short-term bank loans ¥ 102,275       ¥ 30,019      
Number of commercial banks | item 2              
Long-term borrowings [member]                
Disclosure of detailed information about borrowings [line items]                
Bearing annual interest rates               2.90%
Long-term bank loan   ¥ 2,500           ¥ 50,000
Short-term borrowings [member]                
Disclosure of detailed information about borrowings [line items]                
Bearing annual interest rates         2.50% 2.50% 2.50%  
Short-term bank loans         ¥ 30,000   ¥ 30,000  
Short-term borrowings from commercial bank one                
Disclosure of detailed information about borrowings [line items]                
Principal amount ¥ 40,000              
Short-term borrowings from commercial bank one | Bottom of range                
Disclosure of detailed information about borrowings [line items]                
Bearing annual interest rates 2.25%              
Short-term borrowings from commercial bank one | Top of range                
Disclosure of detailed information about borrowings [line items]                
Bearing annual interest rates 2.30%              
Short-term borrowings from commercial bank two                
Disclosure of detailed information about borrowings [line items]                
Principal amount ¥ 32,200              
Bearing annual interest rates 2.15%