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Income Taxes (Details) - HKD ($) $ in Millions	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Income Tax and Tax Rate [Line Items]
Income tax rate	25.00%	25.00%	25.00%
HK
Income Tax and Tax Rate [Line Items]
Income tax rate	16.50%
Preferential income tax rate	8.25%
Assessable profits threshold for preferential income tax rate	$ 2.0
PRC
Income Tax and Tax Rate [Line Items]
Income tax rate	25.00%	25.00%	25.00%
Preferential income tax rate	15.00%

X

- Definition

Amount of assessable profits threshold for preferential income tax rate.

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Income tax and tax rate [Line Items]

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Preferential income tax rate.

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- Definition

Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
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-Name Accounting Standards Codification
-Topic 235
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-Section S99
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-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

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-Topic 740
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319

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