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% | |||||