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Other Financial Liabilities - Summary of Other Financial Liabilities (Detail)
¥ in Thousands, $ in Thousands
Dec. 31, 2018
USD ($)
Dec. 31, 2018
CNY (¥)
Dec. 31, 2017
CNY (¥)
Jan. 01, 2017
CNY (¥)
[1]
Subclassifications of assets, liabilities and equities [abstract]        
Finance lease liabilities (Note 30) $ 7 ¥ 48 ¥ 79  
Current 2 14 33 [1] ¥ 178
Non-current 5 34 46 [1] ¥ 70
Total $ 7 ¥ 48 ¥ 79  
[1] Restated