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Long-term investments - Long-term investments (Details) - CNY (¥) ¥ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Long-term investments |  |  |
Beginning balance | ¥ 137,357 | ¥ 41,442 | ¥ 16,300
Investments made | 9,500 | 38,970 | 30,950
Share of (loss)/income from equity method investments | (523) | 51 | (5,473)
Partially disposal of an equity investment using the equity method | (700) |  |
Disposal of a subsidiary in exchange of investment accounted for at fair value |  | 40,000 |
Fair value change through earnings (including adjustment of subsequent price changes) | (8,079) | 15,964 |
Changes from a subsidiary to equity investment using the equity method | 4,900 |  |
Currency translation adjustment | 144 | 930 | (335)
Ending balance | 142,599 | 137,357 | 41,442
Equity investment using the measurement alternative |  |  |
Long-term investments |  |  |
Beginning balance | 58,464 | 30,000 |
Investments made | 9,500 | 10,000 | 30,000
Fair value change through earnings (including adjustment of subsequent price changes) |  | 18,464 |
Ending balance | 67,964 | 58,464 | 30,000
Equity investment using the equity method |  |  |
Long-term investments |  |  |
Beginning balance | 12,423 | 11,442 | 16,300
Investments made |  |  | 950
Share of (loss)/income from equity method investments | (523) | 51 | (5,473)
Partially disposal of an equity investment using the equity method | (700) |  |
Changes from a subsidiary to equity investment using the equity method | 4,900 |  |
Currency translation adjustment | 144 | 930 | (335)
Ending balance | 16,244 | 12,423 | ¥ 11,442
Investment accounted for at fair value |  |  |
Long-term investments |  |  |
Beginning balance | 66,470 |  |
Investments made |  | 28,970 |
Disposal of a subsidiary in exchange of investment accounted for at fair value |  | 40,000 |
Fair value change through earnings (including adjustment of subsequent price changes) | (8,079) | (2,500) |
Ending balance | ¥ 58,391 | ¥ 66,470 |

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