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Income Taxes - Summary of Current And Deferred Components of The Income Tax Expense (Detail) ¥ in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2024 CNY (¥) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 CNY (¥) | Dec. 31, 2022 CNY (¥)
Components of Income Tax Expense (Benefit), Continuing Operations [Abstract] |  |  |  |
Current income tax expenses | ¥ 5,885 | $ 806 | ¥ 2,388 | ¥ 1,985
Deferred income tax expenses | 0 | 0 | 0 | 0
income tax expenses | ¥ 5,885 | $ 806 | ¥ 2,388 | ¥ 1,985

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