Fixed Assets. Net (Tables)

12 Months Ended

Dec. 31, 2021

Property Plant And Equipment [Abstract]

Components of Fixed Assets

Fixed assets consist of the following:

	As of December 31,
	2020			2021			2021
	RMB			RMB			US$
Computer equipment		2,343,061			2,285,185			358,595
Office building		588,685			588,685			92,378
Leasehold improvements		141,065			194,336			30,496
Office furniture and equipment		135,759			158,784			24,917
Others		19,757			27,786			4,360
		3,228,327			3,254,776			510,746
Less: Accumulated depreciation		(1,860,149	)		(1,916,807	)		(300,789	)
Construction in progress		25,289			6,815			1,069
		1,393,467			1,344,784			211,026