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PRINCIPLES OF CONSOLIDATION (Details) - CNY (¥) ¥ in Thousands | 9 Months Ended
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Sep. 30, 2017 | Sep. 30, 2016
Variable interest entity information |  |
Net revenue | ¥ 1,110,690 | ¥ 744,291
Net income (loss) | (210,357) | (206,773)
Net cash provided by (used in) operating activities | (161,056) | (122,570)
Net cash used in investing activities | (1,229,408) | (863,792)
Net cash provided by (used in) financing activities | 805,108 | 847,322
VIEs |  |
Variable interest entity information |  |
Net revenue | 1,010,033 | 413,567
Net income (loss) | (9,024) | 44,014
Net cash provided by (used in) operating activities | (20,925) | 59,018
Net cash used in investing activities | (65,437) | (83,804)
Net cash provided by (used in) financing activities | (109,588) | 277,018
Costs for outsourcing and other services provided by other entities within the Company | ¥ 548,902 | ¥ 189,715

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- Definition Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3574-108585 + Details
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