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Significant Accounting Policies - Summary of Accounts Receivable (Detail)
¥ in Thousands, $ in Thousands
Dec. 31, 2021
CNY (¥)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
CNY (¥)
Disclosure of Summary of accounts receivable [Abstract]      
Accounts receivable ¥ 6,458 $ 1,013 ¥ 8,361