Long-term investments (Details) ¥ in Thousands, $ in Thousands |
6 Months Ended | |||
|---|---|---|---|---|
|
Jun. 30, 2026
CNY (¥)
|
Jun. 30, 2025
CNY (¥)
|
Jun. 30, 2026
USD ($)
|
Dec. 31, 2025
CNY (¥)
|
|
| Long-term investments. | ||||
| Carrying amount of equity investments | ¥ 111,383 | $ 16,416 | ¥ 112,609 | |
| Accumulated impairment of equity investments without readily determinable fair value | 26,585 | $ 3,918 | ¥ 27,232 | |
| Impairment charges recognized on equity investments without readily determinable fair value | ¥ 0 | ¥ 0 | ||