Significant accounting judgments, estimates and assumptions (Details) ¥ in Millions, $ in Millions |
12 Months Ended | |||
|---|---|---|---|---|
|
Dec. 31, 2024
CNY (¥)
|
Dec. 31, 2024
USD ($)
|
Dec. 31, 2023
CNY (¥)
|
Dec. 31, 2022
CNY (¥)
|
|
| Significant accounting judgments, estimates and assumptions [Abstract] | ||||
| Excess incentive amount reclassified to selling expenses | ¥ 75.2 | $ 10.3 | ¥ 224.5 | ¥ 140.8 |
| Gain loss from asset transfer | ¥ 0.9 | |||