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Finance Costs - Schedule of finance costs (Detail) - HKD ($) | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Finance Costs [Abstract] |  |  |
Interests on margin loans payable | $ 0 | $ 0 | $ 12,475,296
Interests on convertible bond | 430,702 | 8,085,419 | 7,717,348
Interests on bank borrowings | 6,298,576 | 4,740,504 | 1,317,435
Total Finance costs | $ 6,729,278 | $ 12,825,923 | $ 21,510,079

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- Definition Finance costs [Abstract]. + References No definition available. + Details
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- Definition The amount of interest expense on margin loans. + References No definition available. + Details
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- Definition The amount of interest expense on bank borrowings. + References No definition available. + Details
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- Definition The amount of costs associated with financing activities of the entity. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 82 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_82_b&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The amount of interest expense on bonds issued. [Refer: Interest expense; Bonds issued] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_112_c&doctype=Standard -URIDate 2022-03-24 + Details
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