Hong Kong visa transit?

Hi, I moved from Rome to Jeju with a stop in Bejin and I spent a long time to the Bejin airport in order to obtain transit entry permit (Italian passport).
Next days I am moving back, from Jeju (South Corea) to Rome, with a stop in Hong Kong. I would like to know if an entry permit transit is required in Hong Kong too, because I have few time between the first and the second flight.

Thank you,
ADC