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LAND USE RIGHTS, NET (Tables)
12 Months Ended
Dec. 31, 2015
LAND USE RIGHTS, NET [Abstract]  
Schedule of Land Use Rights
As of December 31,
2014          2015         
RMB   RMB  
Land use rights 406,639,529       386,633,770  
Less: accumulated amortization      (34,707,379     (36,719,630
Land use rights, net     371,932,150       349,914,140