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Financial Risk Management Objectives and Policies - Foreign Currency Risk Sensitivity Analysis Assuming 10% Strengthening of Major Currencies against Functional Currency (Detail) - Foreign currency risk [Member]
¥ in Thousands, $ in Thousands
Dec. 31, 2022
CNY (¥)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
CNY (¥)
Singapore dollar [Member]      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Effect on profit before tax ¥ 16,276 $ 2,341 ¥ 15,985
Euro [Member]      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Effect on profit before tax (298) (43) 234
USD [Member]      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Effect on profit before tax ¥ 2,375 $ 342 ¥ 99