Notes To The Consolidated Statements Of Cash Flows - Summary Of Liabilities Arising From Financing Activities (Detail) - HKD ($)	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Beginning balance	$ 514,593,557	$ 348,512,742	$ 434,531,938
Cash flow from financing activities	(239,383,150)	151,263,786	(99,235,169)
Interest expenses	6,729,278	12,825,923	21,510,079
Fair value change	(13,347,266)		(7,765,148)
Conversion of convertible bond	(112,806,493)
Acquisition of subsidiaries	4,589,759
Exchange alignment	103,416	1,991,106	(528,958)
Ending balance	160,479,101	514,593,557	348,512,742
Margin Loans Payable [Member]
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Beginning balance			317,722,438
Cash flow from financing activities			(330,197,734)
Interest expenses			12,475,296
Derivative Financial Liability [Member]
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Beginning balance	13,752,673	12,954,313	20,813,810
Fair value change	(13,347,266)		(7,765,148)
Conversion of convertible bond	(405,407)
Exchange alignment		798,360	(94,349)
Ending balance		13,752,673	12,954,313
Convertible Bond [member]
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Beginning balance	111,970,384	103,278,429	95,995,690
Interest expenses	430,702	8,085,419	7,717,348
Conversion of convertible bond	(112,401,086)
Exchange alignment		606,536	(434,609)
Ending balance		111,970,384	103,278,429
Bank Borrowings [Member]
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Beginning balance	388,870,500	232,280,000
Cash flow from financing activities	(239,383,150)	151,263,786	230,962,565
Interest expenses	6,298,576	4,740,504	1,317,435
Acquisition of subsidiaries	4,589,759
Exchange alignment	103,416	586,210
Ending balance	$ 160,479,101	$ 388,870,500	$ 232,280,000

Increase Decrease Through Non-cash transaction of Conversion of convertible bond Arising From Financing Activities.

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Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

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The fair value gain (loss) that would have been recognised in profit or loss if financial assets had not been reclassified. [Refer: Financial assets]

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The gains (losses) recognised in other comprehensive income on exchange differences on the translation of financial statements of foreign operations, net of tax, before reclassification adjustments. [Refer: Other comprehensive income]

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The increase (decrease) in liabilities arising from financing activities resulting from financing cash flows. [Refer: Cash flows from (used in) financing activities; Liabilities arising from financing activities]

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The increase (decrease) in liabilities arising from financing activities resulting from obtaining or losing control of subsidiaries or other businesses. [Refer: Liabilities arising from financing activities; Subsidiaries [member]]

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The amount of interest expense on borrowings. [Refer: Interest expense; Borrowings]

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The amount of liabilities for which cash flows were, or future cash flows will be, classified in the statement of cash flows as cash flows from financing activities. [Refer: Cash flows from (used in) financing activities; Liabilities]

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