EMPLOYEE BENEFITS OBLIGATIONS - MOVEMENT (Details) - CNY (¥) ¥ in Thousands		12 Months Ended
Oct. 26, 2016	Dec. 31, 2018	Dec. 31, 2017
EMPLOYEE BENEFITS OBLIGATIONS [abstract]
Beginning of the year		¥ 30,745	¥ 34,043
Additions	¥ (24,727)	0	0
Payments		(2,356)	(3,298)
End of the year		¥ 28,389	¥ 30,745

The amount of provisions for employee benefits. [Refer: Employee benefits expense; Provisions]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2018-01-01
-Paragraph 78
-Subparagraph d
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_78_d&doctype=Standard
-URIDate 2018-03-16

Name:	ifrs-full_ProvisionsForEmployeeBenefits
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant