M.FALCON
It’s quite obvious you haven’t done any research because if you had you would know that the International Cadet Scheme is no more for ab-initio foreign applicants. The Hong Kong Immigration Department has put a stop to it which quite frankly should have happened two years ago when the first ab-initio cadets were employed. As far as the Hong Kong Immigration Department is concerned you don’t bring any skill to Hong Kong that isn’t already available here.
As for the rest of your questions, they have been answered to death already. Use the search function.