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SIGNIFICANT ACCOUNTING POLICIES - Leases (Details) - HKD ($) $ in Thousands | 6 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Dec. 31, 2021
SIGNIFICANT ACCOUNTING POLICIES |  |  |  |  |
Weighted-average remaining lease term | 3 years |  | 3 years |  | 3 years
Weighted-average discount rate | 4.69% |  | 4.65% |  | 4.71%
Right-of-use assets obtained under operating leases | $ 7,642 | $ 83,265 | $ 44,793 | $ 83,265 |

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