Other non-current liabilities (Details) ¥ in Thousands, $ in Thousands |
Jun. 30, 2026
CNY (¥)
|
Jun. 30, 2026
USD ($)
|
Dec. 31, 2025
CNY (¥)
|
|---|---|---|---|
| Other non-current liabilities | |||
| Payable to equity method investee | ¥ 450 | $ 66 | ¥ 450 |
| Total other non-current liabilities | ¥ 450 | $ 66 | ¥ 450 |