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Taxation - Schedule of Components of Income Tax Expenses (Detail) - CNY (¥) ¥ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Components of Income Tax Expense (Benefit), Continuing Operations [Abstract] |  |  |
Current income tax expenses | ¥ 59,527 | ¥ 0 | ¥ 0

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