FAIR VALUE MEASUREMENTS (Schedule of Changes in Fair Value of Warrant Liability) (Details)	6 Months Ended
Jun. 30, 2017 CNY (¥)	Jun. 30, 2017 USD ($)	Jun. 30, 2016 CNY (¥)
Derivative [Line Items]
Change in fair value of call spread	¥ 76,719,685	$ 11,316,754	¥ 823,346,528
Call spread options [Member]
Derivative [Line Items]
Balance	0		7,277,406
Purchase of call spread option	0		4,761,603
Change in fair value of call spread	0		3,076,214
Exercise of call spread options	0		(5,132,923)
Balance	¥ 0		¥ 9,982,300

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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