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Summary of Significant Accounting Policies - Schedule of Condensed Balance Sheet (Parenthetical) (Details) ¥ in Thousands, $ in Thousands | Dec. 31, 2024 CNY (¥) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 CNY (¥)
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Accounts receivable, net of allowance | ¥ 28,772 | $ 3,942 | ¥ 19,263
VIE |  |  |
Accounts receivable, net of allowance | ¥ 28,404 | $ 3,891 | ¥ 19,140

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