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Principal accounting policies (Tables)

12 Months Ended

Dec. 31, 2016

Principal accounting policies [Abstract]

Schedule of property and equipment estimated useful lives and residual rate

		Estimated useful lives		Residual rate

Buildings		40 years			0	%
Servers, computers and equipment		3 years			0%-5	%
Leasehold improvements		Shorter of lease term or 5 years			0	%
Decoration of buildings		10 years			0	%
Motor vehicles		4 years			5	%
Furniture, fixture and office equipment		5 years			0%-5	%

Schedule of amortization of finite-lived intangible assets is computed using the straight-line method over the following estimated useful lives

	Estimated useful lives

Brand names	1-15 years
Operating rights for game broadcasting	Over the contract terms
Operating rights for licensed games	Shorter of the economic life or license period of relevant online game
Software	3 -5 years
Domain names	15 years
Technology	5 years
Others	3-5 years