SHARE BASED COMPENSATION - Summary of Non-vested Shares (Details) ¥ in Thousands, $ in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
|
Dec. 31, 2025
CNY (¥)
|
Dec. 31, 2025
USD ($)
|
Dec. 31, 2024
CNY (¥)
|
Dec. 31, 2023
CNY (¥)
|
|
| Weighted-average fair value on grant date (RMB/Share) | ||||
| Fair value of shares vested | ¥ 0 | ¥ 0 | ¥ 0 | |
| Proceeds from exercise of share options | ¥ 0 | $ 0 | ¥ 3,691 | ¥ 0 |