Directors' and Other Senior Management's Remuneration - Additional Information (Detail) - CNY (¥)	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Senior management [member] \| Top of range [member]
Disclosure of transactions between related parties [line items]
Salaries, allowances and bonuses	¥ 900,000	¥ 2,000,000
Other senior management [member] \| Bottom of range [member]
Disclosure of transactions between related parties [line items]
Salaries, allowances and bonuses	¥ 400,000	¥ 1,500,000

The amount of compensation to key management personnel in the form of short-term employee benefits. [Refer: Key management personnel of entity or parent [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 24
-IssueDate 2020-01-01
-Paragraph 17
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=24&code=ifrs-tx-2020-en-r&anchor=para_17_a&doctype=Standard
-URIDate 2020-01-01

Name:	ifrs-full_KeyManagementPersonnelCompensationShorttermEmployeeBenefits
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration