Property and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2014

Property and Equipment, Net [Abstract]

Summary of property and equipment, net

	As of December 31,
	2013		2014		2014
	RMB		RMB		US$
Computer, equipment and furniture	110,209		130,327		21,006
Motor vehicles	5,732		6,319		1,018
Leasehold improvements	35,555		35,983		5,799
Total	151,496		172,629		27,823
Less: accumulated depreciation	(56,370	)	(82,935	)	(13,367	)
Net book value	95,126		89,694		14,456