 Ming-sum has set up the first community-based family service centre, the first counselling centre for psychotropic substance abusers and the first employee assistance program in Hong Kong.He also supervised the Hong Kong Eye Bank Clinic and coordinated the program development, fund raising, service evaluation, and staff development of Hong Kong Christian Service in the 1980s.Ming-sum received his MSW from McGill University as a top student and earned his PhD from the University of Toronto on three scholarships.