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CONCENTRATION OF RISKS (Tables)
12 Months Ended
Dec. 31, 2014
CONCENTRATION OF RISKS [Abstract]  
Significance of Service Fees Received from Lottery Administration Centers
For the years ended December 31,
2012 2013     2014     2014  
RMB RMB     RMB     US$  
                       
Lottery administration center A     111,533       169,474       260,096       41,920  
Lottery administration center B     43,440       75,212       198,549       32,000  
Lottery administration center C     13,653       45,231       121,628       19,603