Income tax - Valuation Allowance (Details) - CNY (¥) ¥ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
|
| Movement of valuation allowance | |||
| Balance at beginning of the year | ¥ 5,380,024 | ¥ 3,151,394 | ¥ 1,061,275 |
| Additions | 1,226,423 | 2,228,630 | 2,090,119 |
| Reversals | (1,266,564) | ||
| Balance at end of the year | 5,339,883 | ¥ 5,380,024 | ¥ 3,151,394 |
| Accumulated net operating losses | ¥ 7,292,000 | ||