Professor Leung graduated from The Chinese University of Hong Kong in 1992, and he received subspecialty training on Immunology and Allergy in the Hospital for Sick Children in Toronto, Ontario, Canada in 1997-1998.  He was awarded Doctor of Medicine degree by The Chinese University of Hong Kong in 2004 for his research works on immunogenetics of childhood asthma.  Professor Leung was conferred as a First Fellow in Paediatric Immunology, Allergy and Infectious Diseases subspecialty by the Hong Kong College of Paediatricians in 2012.  Professor Leung is a professor in Department of Paediatrics of The Chinese University of Hong Kong since 2009, and he chaired this Department in 2014-2020.  He is also a visiting professor of the Central South University in Changsha, People’s Republic of China. Among many research achievements, Professor Leung was nominated to receive the Research Excellence in Allergic Diseases Award by the Hong Kong Institute of Allergy in September 2021. Professor Leung published more than 400 refereed journal articles and supervised sevenpost-doctoral fellows, 12 doctoral and 35 doctoral and master students as well as mentored 12 elite medical students under the Flagship programme Global Physician-Leadership Stream of the Faculty.