The university system in Hong Kong is a 4-year degree system similar to the UK to a system but which incorporates a US liberal arts style core curriculum into its undergraduate education. The core curriculum varies for each university in Hong Kong. So it is important to do your research.
It is still direct entry for professional degrees like Law and Medicine.
Refer to individual universities as well as to the general information here. Much of the information on personal statement writing is equally applicable to the HK personal statement. The difference? There is no central application system for Hong Kong so you can change your statement and apply to different courses at each university.