v3.26.1
GOODWILL - Summary of goodwill (Details)
¥ in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
CNY (¥)
Goodwill [Line Items]      
Beginning Balance ¥ 331   ¥ 331
Addition [1] 10,729   0
Ending balance ¥ 11,060 $ 1,582 ¥ 331
[1] Represent the goodwill resulted from business combination in 2025. The Group acquired another company for USD2,900 and RMB12,000, primarily to support its existing learning service.