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Intangible assets, net (Tables) | 12 Months Ended
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Dec. 31, 2016
Intangible assets, net [Abstract] |
Summary of Group's intangible assets |
|  | December 31, |
|  | 2015 |  | 2016 |
|  | RMB |  | RMB |
Gross carrying amount |  |  |  |  |  |  |
Brand names |  |  | 102,654 |  |  | 59,034 |
Operating rights for game broadcasting |  |  | 35,071 |  |  | 58,655 |
Operating rights for licensed games |  |  | 46,879 |  |  | 40,274 |
Software |  |  | 38,307 |  |  | 30,632 |
Domain names |  |  | 25,902 |  |  | 27,311 |
Technology |  |  | 17,621 |  |  | 18,282 |
Others |  |  | 31,200 |  |  | 18,300 |
Total of gross carrying amount |  |  | 297,634 |  |  | 252,488 |
Less: accumulated amortization |  |  |  |  |  |  |
Brand names |  |  | (20,294) |  |  | (21,810) |
Operating rights for game broadcasting |  |  | (23,278) |  |  | (46,855) |
Operating rights for licensed games |  |  | (15,010) |  |  | (30,804) |
Software |  |  | (9,464) |  |  | (13,110) |
Domain names |  |  | (6,249) |  |  | (8,449) |
Technology |  |  | (7,712) |  |  | (9,457) |
Others |  |  | (5,478) |  |  | (3,592) |
Total accumulated amortization |  |  | (87,485) |  |  | (134,077) |
Less: accumulated impairment |  |  | (63,712) |  |  | (59,485) |
Intangible assets, net |  |  | 146,437 |  |  | 58,926 |
Schedule of estimated amortization expenses |
|  | Amortization expense |
|  | of intangible assets |
2017 |  |  | 25,606 |
2018 |  |  | 10,453 |
2019 |  |  | 6,032 |
2020 |  |  | 4,708 |
2021 |  |  | 1,925 |
Schedule of weighted average amortization periods of intangible assets |
|  | December 31,
|  | 2015 |  | 2016
Domain names |  | 15 years |  | 15 years
Technology |  | 5 years |  | 5 years
Software |  | 5 years |  | 5 years
Operating rights for licensed games |  | 3 years |  | 2 years
Operating rights for game broadcasting |  | 1 year |  | 1 year
Brand names |  | 10 years |  | Not applicable
Others |  | 3-5 years |  | Not applicable

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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