v3.26.1
BORROWINGS - Secured bank borrowings related to discounted notes receivable (Details)
¥ in Thousands, $ in Thousands
1 Months Ended 12 Months Ended
Dec. 31, 2025
CNY (¥)
Jun. 30, 2025
CNY (¥)
Feb. 28, 2025
CNY (¥)
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2023
CNY (¥)
Dec. 31, 2025
USD ($)
Short-Term Debt [Line Items]                
Notes receivable ¥ 94,697     ¥ 94,697   ¥ 22,341   $ 13,541
Repayment of borrowings       347,242 $ 49,655 117,682 ¥ 0  
Secured bank borrowings | Factoring with recourse                
Short-Term Debt [Line Items]                
Notes receivable 280,000 ¥ 280,000 ¥ 280,000 280,000        
Factoring of notes receivable 276,146 ¥ 276,146 ¥ 276,146          
Repayment of borrowings       80,000        
Assets pledged to secure a debt instrument ¥ 280,000     ¥ 280,000   ¥ 80,000    
Secured bank borrowings | Minimum | Factoring with recourse                
Short-Term Debt [Line Items]                
Interest rate 1.35% 1.35% 1.35%          
Secured bank borrowings | Maximum | Factoring with recourse                
Short-Term Debt [Line Items]                
Interest rate 2.34% 2.34% 2.34%