Billy is the Assistant Professor (Physiotherapy) in the Department of Rehabilitation Sciences (RS) at the Hong Kong Polytechnic University (PolyU). Billy has worked as a physiotherapist for over 18 years and gained solid clinical experience in different clinical settings. Billy is an active educator at different health-related areas and he has extensive teaching experience in the tertiary education. He is the recipient of the RS Outstanding Teaching Award 2016/17 and FHSS Teaching Prize 2016/17 of PolyU. Currently, he has been appointed as the Gait and Motion Analysis Laboratory coordinator of Department of Rehabilitation Sciences of the PolyU. Billy is serving as the Executive Committee Member of the Hong Kong Physiotherapy Association, Associate Editor of Hong Kong Physiotherapy Journal and the Chairperson of Membership Subcommittee of the Hong Kong Physiotherapy Association. Billy’s research interest primarily focuses on Aquatic Therapy related research. He is the Vice Chairman of Aquatic Physiotherapy Working Group of Hong Kong Physiotherapy Association. He has collaborated with different organizations in Hong Kong and Mainland China, for aquatic therapy training and research. Also, he has published articles related to Ai Chi (Aquatic Tai Chi), Deep Water Running and Aquatic locomotion in international journals.