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Accounts Receivable - Summary of trade receivables (Detail) - HKD ($) | Dec. 31, 2022 | Dec. 31, 2021
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Disclosure Of Trade Receivables [Line Items] |  |
Accounts receivable | $ 187,673,616 | $ 86,514,680
Receivable From Capital Market Solutions Services [Member] |  |
Disclosure Of Trade Receivables [Line Items] |  |
Accounts receivable | 81,614,733 | $ 86,514,680
Commission receivable from insurance brokerage [Member] |  |
Disclosure Of Trade Receivables [Line Items] |  |
Accounts receivable | 2,718,150 |
Receivable From Digital Solution And Services |  |
Disclosure Of Trade Receivables [Line Items] |  |
Accounts receivable | 81,844,175 |
Receivable From Fashion And Luxury Media Advertising And Marketing Services |  |
Disclosure Of Trade Receivables [Line Items] |  |
Accounts receivable | $ 21,496,558 |

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