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REVENUE FROM CONTINUING OPERATIONS (Schedule of Revenue from contracts with customers) (Details)
¥ in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2019
USD ($)
Dec. 31, 2019
CNY (¥)
Dec. 31, 2018
CNY (¥)
Dec. 31, 2017
CNY (¥)
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue from contracts with a customer | ¥   ¥ 12,969
USD [Member]        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue from contracts with a customer | $ $ 1,863