Fixed Assets, Net

12 Months Ended

Dec. 31, 2021

Property Plant And Equipment [Abstract]

11.	FIXED ASSETS, NET

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

Impairment charges in the amount of nil, RMB95,111 and nil were recognized on fixed assets for the years ended December 31, 2019, 2020 and 2021, respectively.

Depreciation expense was RMB476,068, RMB480,396 and RMB400,241 (US$62,807) for the years ended December 31, 2019, 2020 and 2021, respectively.