HK Yap is a Certified Professional Trainer accredited by International Professional Manager Associations, (IPMA), UK and a People's Association Certified Trainer. He conducted Chinese Classics (弟子规) in PA Community Centres and RCs. He organised workshops and talks for parents on moral education as well as getting the support of parents to create an environment that a child needs to practise his knowledge learnt from Di Zi Gui (弟子规). He also conducts Di Zi Gui classes in Primary Schools in Singapore.
He strongly believes that a good environment is one of the main factors that influence a child's upbringing and character development.