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Revenue, Other Income And Other Gain - Schedule revenue from contracts with customers (Detail) - HKD ($) | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Revenue from contracts with customers | $ 825,184,760 | $ 680,477,636 | $ 607,263,125
Net fair value changes on financial assets at fair value through profit or loss | (161,406,875) | 597,551,244 | (31,054,945)
Net fair value changes on derivative financial assets | 484,760,273 | (54,008,047) | 371,305,326
Gain related to disposed investments | 173,129,345 | 125,112,176 | 82,948,508
Dividend income | 50,213,509 | 48,711,208 | 88,078,159
Total revenue | 1,371,881,012 | 1,397,844,217 | 1,118,540,173
Underwriting Commission And Brokerage Fee [member] |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Revenue from contracts with customers | 94,528,263 | 29,051,940 | 165,472,605
Financial Advisory Fee [member] |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Revenue from contracts with customers | 427,723,245 | 568,045,723 | 210,852,275
Management Fee And Performance Based Incentive Fee [member] |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Revenue from contracts with customers | 16,791,083 | 57,230,194 | 196,352,216
Brokerage And Handling Fees [member] |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Revenue from contracts with customers | 42,313,366 | 25,356,917 | 33,359,007
Others [member] |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Revenue from contracts with customers | 576,736 | 792,862 | 1,227,022
Insurance Brokerage Services Commission [Member] |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Revenue from contracts with customers | 8,145,147 |  |
Fashion And Luxury Magazines And Advertising Services income [Member] |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Revenue from contracts with customers | 28,254,167 |  |
Fashion And Luxury Media Licensing And Marketing Services Income [Member] |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Revenue from contracts with customers | 31,424,904 |  |
Digital Solutions Fees [Member] |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Revenue from contracts with customers | 175,427,849 |  |
Capital market solutions [Member] |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Revenue from contracts with customers | 581,932,693 | 680,477,636 | 607,263,125
Total revenue | 581,932,693 | 680,477,636 | 607,263,125
Capital market solutions [Member] | Underwriting Commission And Brokerage Fee [member] |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Revenue from contracts with customers | 94,528,263 | 29,051,940 | 165,472,605
Capital market solutions [Member] | Financial Advisory Fee [member] |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Revenue from contracts with customers | 427,723,245 | 568,045,723 | 210,852,275
Capital market solutions [Member] | Management Fee And Performance Based Incentive Fee [member] |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Revenue from contracts with customers | 16,791,083 | 57,230,194 | 196,352,216
Capital market solutions [Member] | Brokerage And Handling Fees [member] |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Revenue from contracts with customers | 42,313,366 | 25,356,917 | 33,359,007
Capital market solutions [Member] | Others [member] |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Revenue from contracts with customers | 576,736 | 792,862 | 1,227,022
Digital solutions and other services [Member] |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Revenue from contracts with customers | 183,572,996 |  |
Total revenue | 183,572,996 |  |
Digital solutions and other services [Member] | Insurance Brokerage Services Commission [Member] |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Revenue from contracts with customers | 8,145,147 |  |
Digital solutions and other services [Member] | Digital Solutions Fees [Member] |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Revenue from contracts with customers | 175,427,849 |  |
Fashion and luxury media advertising and marketing services [Member] |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Revenue from contracts with customers | 59,679,071 |  |
Total revenue | 59,679,071 |  |
Fashion and luxury media advertising and marketing services [Member] | Fashion And Luxury Magazines And Advertising Services income [Member] |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Revenue from contracts with customers | 28,254,167 |  |
Fashion and luxury media advertising and marketing services [Member] | Fashion And Luxury Media Licensing And Marketing Services Income [Member] |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Revenue from contracts with customers | 31,424,904 |  |
Strategic Investment [member] |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Net fair value changes on financial assets at fair value through profit or loss | (161,406,875) | 597,551,244 | (31,054,945)
Net fair value changes on derivative financial assets | 484,760,273 | (54,008,047) | 371,305,326
Gain related to disposed investments | 173,129,345 | 125,112,176 | 82,948,508
Dividend income | 50,213,509 | 48,711,208 | 88,078,159
Total revenue | $ 546,696,252 | $ 717,366,581 | $ 511,277,048

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- Definition The amount of revenue from contracts with customers. A customer is a party that has contracted with an entity to obtain goods or services that are an output of the entity’s ordinary activities in exchange for consideration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2022-03-24 -Paragraph 114 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2022-en-r&anchor=para_114&doctype=Standard -URIDate 2022-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2022-03-24 -Paragraph 113 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2022-en-r&anchor=para_113_a&doctype=Standard -URIDate 2022-03-24 + Details
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