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Short-term Investments (Tables) | 12 Months Ended
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Dec. 31, 2020
Short-term Investments [Abstract] |
Summary of short-term investments |
|  | December 31, 2018 |  |  | December 31, 2019 |  |  | December 31, 2020 |
|  | RMB in thousands |
Financial products |  |  | 858,021 |  |  |  | 1,070,113 |  |  |  | 2,866,643 |
Investments in publicly traded companies |  |  | — |  |  |  | 80,918 |  |  |  | 434,609 |
Money market funds |  |  | 87,317 |  |  |  | 109,779 |  |  |  | 55,937 |
Total |  |  | 945,338 |  |  |  | 1,260,810 |  |  |  | 3,357,189 |

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