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ORGANIZATION AND PRINCIPAL ACTIVITIES (Details)
¥ in Thousands, $ in Thousands
Dec. 31, 2017
USD ($)
Dec. 31, 2017
CNY (¥)
Dec. 31, 2016
CNY (¥)
Disclosure of detailed information about business combination [line items]      
Net current liabilities | ¥   ¥ 15,840 ¥ 40,050
Total assets less current liabilities | ¥   ¥ (15,510) ¥ 18,500
USD [Member]      
Disclosure of detailed information about business combination [line items]      
Net current liabilities | $ $ 2,440    
Total assets less current liabilities | $ $ (2,380)