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Long-Term Investments - Schedule of Long-Term Investments (Parenthetical) (Details) ¥ in Thousands, $ in Thousands |  | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jul. 31, 2019 CNY (¥) | Mar. 31, 2023 USD ($) | Jan. 31, 2022 CNY (¥) | Jul. 31, 2021 CNY (¥) | Dec. 31, 2023 CNY (¥) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 CNY (¥) | Dec. 31, 2021 CNY (¥) | Dec. 31, 2019 CNY (¥) | Nov. 30, 2021 CNY (¥) | Sep. 30, 2017
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Loss in equity method investments |  |  |  |  | ¥ 50,374 | $ 7,095 | ¥ 6,471 | ¥ 6,563 |  |  |
Alternative Investments |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Impairment loss |  |  |  |  | ¥ 0 |  | ¥ 0 | ¥ 16,500 |  |  |
Qingdao Qingle Venture Capital Partnership (“Qingle”) |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Equity interest percentage |  |  |  |  | 17.54% |  | 11.95% |  |  |  |
Payment for purchasing shares of investment |  |  |  |  |  |  | ¥ 30,000 |  |  |  |
Equity-method investments |  |  |  |  | ¥ 30,070 |  | 30,002 |  |  |  |
Nantong Wanwuchuangxin Venture Capital Partnership (“Wanwuchuangxin”) |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Equity interest percentage |  |  |  |  |  |  |  |  |  | 29.00% |
Payment for purchasing shares of investment |  |  |  |  |  |  |  |  |  | ¥ 29,000 |
Equity-method investments |  |  |  |  | ¥ 57,333 |  | ¥ 27,867 |  |  |  |
Jinsong |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Equity interest percentage |  |  |  |  | 29.99% |  | 25.71% |  |  |  | 30.00%
Payment to increase the investment of preferred shares |  |  |  | ¥ 55,000 |  |  |  |  | ¥ 8,430 |  |
Payment to increase the investment of ordinary shares |  |  |  |  |  |  |  |  | ¥ 1,940 |  |
Loss in equity method investments |  |  |  |  | ¥ 761 |  | ¥ (1,448) |  |  |  |
Jinsong | Ordinary Shares |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Ordinary share investments amount |  |  |  | 28,370 |  |  |  |  |  |  |
Jinsong | Preferred Shares |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Equity securities without readily determinable fair value |  |  |  | ¥ 63,430 |  |  |  |  |  |  |
AiFenLei |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Equity interest percentage | 52.50% |  |  |  | 41.90% |  |  |  |  |  |
Share of loss in equity method investments | ¥ (9,259) |  |  |  |  |  |  |  |  |  |
Payment to increase the investment of preferred shares |  |  | ¥ 16,844 |  |  |  |  |  |  |  |
Payment to increase in investment | $ |  | $ 40,000 |  |  |  |  |  |  |  |  |
Loss in equity method investments |  |  |  |  | ¥ (63,029) |  |  |  |  |  |
Equity securities without readily determinable fair value |  |  |  |  | 228,815 |  | ¥ 16,844 |  |  |  |
AiFenLei | Ordinary and Preferred Shares |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Equity interest percentage |  |  |  |  |  |  | 33.90% |  |  |  |
Other Equity Securities Without Readily Determinable Fair Values |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Equity securities without readily determinable fair value |  |  |  |  | ¥ 31,994 |  | ¥ 31,539 |  |  |  |

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