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SHORT TERM INVESTMENT (Tables)
12 Months Ended
Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]  
Debt Securities, Available-for-sale [Table Text Block]
 
  
As of December 31, 2018
 
  
Cost or
Amortized
cost
  
Gross
unrealized
gains
  
Gross
unrealized
losses
  
Fair
value
 
  
RMB
  
RMB
  
RMB
  
RMB
 
Short-term investment
                
Available-for-sale debt securities  50,000   -   -   50,000