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LAND USE RIGHTS - Additional Information (Details) - CNY (¥) | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure Of LAND USE RIGHTS [Line Items] |  |  |
Impairment loss recognised in profit or loss, intangible assets other than goodwill | ¥ 0 | ¥ 0 | ¥ 4,256,000
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 | ¥ 0 |

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- Definition 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] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2020-01-01 -Paragraph 118 -Subparagraph e -Clause iv -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2020-en-r&anchor=para_118_e_iv&doctype=Standard -URIDate 2020-01-01 + Details
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