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Investments (Tables)

12 Months Ended

Dec. 31, 2017

Summary of unaudited condensed financial information of the Group's equity investments


		As of December 31,
		2016				2017
		RMB				RMB				US$
Balance sheet data:
Current assets			206,376				212,333				32,635
Non-current assets			243,356				348,656				53,587
Current liabilities			56,828				90,909				13,972
Non-current liabilities			223				2,437				375


		Year ended December 31,
		2015				2016				2017
		RMB				RMB				RMB				US$
Operating data:
Revenues			45,797				94,343				53,175				8,173
Gross profit			21,444				65,097				43,947				6,755
Operating loss			(39,325	)			(50,475	)			(2,372	)			(365	)
Net (loss) income			(32,562	)			(40,192	)			5,849				899

Long-term investments

Schedule of Investments


		As of December 31,
		2016				2017
		RMB				RMB				US$
Cost method investments			869,741				1,002,539				154,087
Equity method investments			100,063				149,969				23,050
Available-for-sale debt security			7,353				182				28

Total			977,157				1,152,690				177,165