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Income Taxes (Details) - CNY (¥) ¥ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Income Tax [Line Items] |  |  |
Enterprise income tax | (0.14%) | (0.02%) | 0.45%
Retained earnings | ¥ 0 | ¥ 0 | ¥ 0
United States |  |  |
Income Tax [Line Items] |  |  |
Applicable income tax rate | 27.98% | 27.98% | 27.98%
PRC |  |  |
Income Tax [Line Items] |  |  |
Enterprise income tax | 25.00% |  |
Preferential tax rate | 15.00% | 15.00% | 15.00%
HNTE status review period | 3 years |  |
Percentage of tax deductible expenses engaged in R&D activities |  |  | 200.00%
Percentage of withholding tax on foreign investors, non-resident enterprises | 10.00% |  |

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