A teaching portfolio is a ongoing story of a teachers skills and abilities, qualifications and observations, teaching philosophies, resources, recommendations, lesson plans and schemes of work . A teaching portfolio can be presented as a physical or digital resource.
There is more to teaching in Hong Kong that a positive attitude and a winning smile. Though they will help. There are learning centres, public and private schools, colleges, tutors and universities. You can earn from about $2000 to $12000 USD a month, but you are going to have to be qualified and experienced to head towards those heights.