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ORGANIZATION AND PRINCIPAL ACTIVITIES (Narrative) (Details)
¥ in Thousands, $ in Thousands
Dec. 31, 2019
USD ($)
Dec. 31, 2019
CNY (¥)
Dec. 31, 2018
CNY (¥)
Disclosure of detailed information about business combination [line items]      
Net current liabilities | ¥   ¥ 28,380 ¥ 22,070
Total assets less current liabilities | ¥   ¥ (27,550) ¥ (21,800)
USD [Member]      
Disclosure of detailed information about business combination [line items]      
Net current liabilities | $ $ 4,080    
Total assets less current liabilities | $ $ 3,960