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PARENT COMPANY ONLY CONDENSED FINANCIAL INFORMATION (Condensed statements of cash flows) (Details) ¥ in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2018 CNY (¥) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 CNY (¥) | Dec. 31, 2016 CNY (¥)
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Net cash used in operating activities | ¥ (38,591) | $ (5,614) | ¥ 26,732 | ¥ (78,078)
Net cash generated from (used in) investing activities | (1,000,355) | (145,496) | (313,010) | (74,847)
Net cash (used in) generated from financing activities | 1,203,042 | 174,976 | 189,899 | (117,922)
Exchange rate effect on cash | 459 | 67 | 157 | (11,240)
Net increase (decrease) in cash | 164,555 | 23,933 | (96,222) | (282,087)
Cash at beginning of the year | 98,191 | 451 | 22,218 | 1,768
Cash at end of the year | ¥ 404,742 | $ 58,867 | ¥ 98,191 | ¥ 22,218

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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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3521-108585 + Details
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