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Other Current Assets - Summary of Other Current Assets (Detail)
¥ in Thousands, $ in Thousands
Dec. 31, 2017
CNY (¥)
Dec. 31, 2017
USD ($)
Dec. 31, 2016
CNY (¥)
Current      
Development properties ¥ 23,833 $ 3,765 ¥ 23,378
Held for trading investment, quoted equity securities(i) 24,714 3,905 12,181
Total ¥ 48,547 $ 7,670 ¥ 35,559