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ACQUISITIONS AND DISPOSALS (Schedule of Pro forma Results) (Details) - CHS [Member]
¥ in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2018
CNY (¥)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
CNY (¥)
Business Acquisition [Line Items]      
Net revenues ¥ 12,056 $ 1,753 ¥ 4,569
Net loss ¥ (63,159) $ (9,186) ¥ (70,018)