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Financial risk management objectives and policies - Disclosure of maturity analysis for non-derivative financial liabilities (Detail) - HKD ($) | Dec. 31, 2022 | Dec. 31, 2021
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Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |
Accounts payable | $ 82,315,173 | $ 155,020,918
Bank borrowings | 162,248,311 | 393,558,087
Financial liabilities included in other payables and accruals | 102,788,191 | 72,107,680
Convertible bonds |  | 125,319,026
Non-derivative financial liabilities, undiscounted cash flows | $ 347,351,675 | $ 746,005,711
Weighted average interest rate | 6.30% | 2.10%
Convertible Bond [Member] |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |
Weighted average interest rate |  | 7.80%
Bank borrowings [Member] |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |
Weighted average interest rate | 6.30% | 2.10%
On demand or less than 3 months [member] |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |
Accounts payable | $ 82,315,173 | $ 155,020,918
Bank borrowings | 158,011,249 | 390,926,836
Financial liabilities included in other payables and accruals | 102,788,191 | 72,107,680
Non-derivative financial liabilities, undiscounted cash flows | 343,114,613 | 618,055,434
3 months to 1 year [member] |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |
Bank borrowings | 622,237 | 2,631,251
Non-derivative financial liabilities, undiscounted cash flows | 622,237 | 2,631,251
1 to 5 years [member] |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |
Bank borrowings | 3,614,825 |
Convertible bonds |  | 125,319,026
Non-derivative financial liabilities, undiscounted cash flows | $ 3,614,825 | $ 125,319,026

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- Definition Bank borrowings. + References No definition available. + Details
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- Definition Financial liabilities included in other payables and accruals undiscounted cash flows. + References No definition available. + Details
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- Definition The amount of contractual undiscounted cash flows in relation to non-derivative financial liabilities including future interest expense. + References No definition available. + Details
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- Definition The interest rate on borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 7 -IssueDate 2022-03-24 -Paragraph 7 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2022-en-r&anchor=para_7&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The amount of contractual undiscounted cash flows in relation to non-derivative financial liabilities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2022-03-24 -Paragraph 39 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2022-en-r&anchor=para_39_a&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The amount of contractual undiscounted cash flows in relation to trade and other payables. [Refer: Trade and other payables] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2022-03-24 -Paragraph B11D -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2022-en-r&anchor=para_B11D&doctype=Appendix&subtype=B -URIDate 2022-03-24 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2022-03-24 -Paragraph IG31A -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2022-en-r&anchor=para_IG31A&doctype=Implementation%20Guidance -URIDate 2022-03-24 + Details
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