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LAND USE RIGHTS (Details) - CNY (¥)
¥ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Disclosure Of LAND USE RIGHTS [Line Items]    
Cost ¥ 32,619 ¥ 32,619
Balance 4,364  
Balance 0 4,364
Carrying Amount 0 4,364
Accumulated amortization    
Disclosure Of LAND USE RIGHTS [Line Items]    
Balance (4,541) (4,398)
Amortization (108) (143)
Balance (4,649) (4,541)
Impairment    
Disclosure Of LAND USE RIGHTS [Line Items]    
Balance (23,714) (22,301)
Impairment for the year (4,256) (1,413)
Balance ¥ (27,970) ¥ (23,714)