Au Kin Heng Constantine is an emergency specialist from Hong Kong who used to work at Queen Elizabeth Hospital, Hong Kong. Together with Dr. Gary Chu, Constantine founded the emergency room at the University of Hong Kong-Shenzhen Hospital, Shenzhen. Constantine is now the Medical Director of ECT-HK/SZ. In terms of experience in medical coverage, Constantine served in the Oxfam Trailwalker, Hong Kong, from 2002 to 2010, the Beijing 2008 Summer Olympic Games (Equestrian Event), the East Asian Games 2009 (Hong Kong), the 16th Asian Games (Guangzhou, 2010) and Rugby 7, Nanjing 2014 Youth Olympics (YOG).