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Financial Risk Management Objectives and Policies - Foreign Currency Exchange Rate Risk Sensitivity Analysis Assuming 10% Strengthening of Major Currencies against Functional Currency (Detail) - Foreign currency risk [Member]
¥ in Thousands, $ in Thousands
Dec. 31, 2024
CNY (¥)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
CNY (¥)
Singapore dollar [Member]      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Effect on profit before tax ¥ 12,601 $ 1,757 ¥ 14,964
Euro [Member]      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Effect on profit before tax 769 107 533
USD [Member]      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Effect on profit before tax ¥ 6,905 $ 963 ¥ 493