LAND USE RIGHTS - Additional Information (Details) - CNY (¥)	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure Of LAND USE RIGHTS [Line Items]
Impairment loss recognised in profit or loss, intangible assets other than goodwill	¥ 0	¥ 4,256,000	¥ 1,413,000
Land use rights member [Member]
Disclosure Of LAND USE RIGHTS [Line Items]
Impairment loss recognised in profit or loss, intangible assets other than goodwill	¥ 0	¥ 4,256,000

The amount of impairment loss recognised in profit or loss for intangible assets other than goodwill. [Refer: Impairment loss recognised in profit or loss; Intangible assets other than goodwill]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 38
-IssueDate 2019-01-01
-Paragraph 118
-Subparagraph e
-Clause iv
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2019-en-r&anchor=para_118_e_iv&doctype=Standard
-URIDate 2019-03-27

Name:	ifrs-full_ImpairmentLossRecognisedInProfitOrLossIntangibleAssetsOtherThanGoodwill
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration