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Other income and other net gains/(losses) - Additional Information (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Other income and other net gain/(losses) |  |  |
Revenue from funding support of employee support scheme | $ 234,470 |  | $ 470,165
Revenue from Funding Support of Jobs Support Scheme | $ 300,208 | $ 7,932 | $ 43,695

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- Definition Amount of revenue from funding support of Jobs Support Scheme. + References No definition available. + Details
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