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GOODWILL - Additional Information (Details) - CNY (¥) | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2016 | Dec. 31, 2015
GOODWILL |  |  |  |  |
Impairment loss recognised in profit or loss, goodwill | ¥ 0 | ¥ 0 | ¥ 0 | ¥ 0 | ¥ 3,735,000

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- Definition The amount of impairment loss recognised in profit or loss for goodwill. [Refer: Impairment loss recognised in profit or loss; Goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2020-01-01 -Paragraph B67 -Subparagraph d -Clause v -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2020-en-r&anchor=para_B67_d_v&doctype=Appendix&subtype=B -URIDate 2020-01-01 + Details
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