FINANCIAL RISK MANAGEMENT - MARKET RISK - CASH FLOW AND FAIR VALUE INTEREST RATE RISK (Details) - Interest rate risk [member] - CNY (¥)	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Disclosure of nature and extent of risks arising from financial instruments [line items]
Average interest rate of deposits held in banks	1.53%	1.62%
Interest bearing debts	¥ 0	¥ 0

The amount of instruments representing indebtedness held by the entity.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2019-01-01
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_55&doctype=Standard
-URIDate 2019-03-27

Name:	ifrs-full_DebtInstrumentsHeld
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant