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BUSINESS ACQUISITIONS (Schedule of net assets of Bayannaoer Mining) (Details) - Bayannaoer Mining [Member] ¥ in Thousands | Nov. 30, 2017 CNY (¥)
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Statement Line Items [Line Items] |
Cash and cash equivalents | ¥ 631
Other current assets | 361
Property, plant and equipment | 336
Current liabilities | (611)
Net assets | ¥ 717

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