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ASSETS HELD FOR SALE (Narrative) (Details)
¥ in Thousands, $ in Thousands
Dec. 31, 2019
USD ($)
Dec. 31, 2019
CNY (¥)
Dec. 31, 2018
CNY (¥)
Assets Held-for-sale, Not Part of Disposal Group, Current $ 0 ¥ 0 ¥ 4,384
Property, Plant and Equipment [Member]      
Assets Held-for-sale, Not Part of Disposal Group, Current   ¥ 0 ¥ 4,384