What is stephen wong ka-lok?

As an AI language model, I do not have access to real-time information. However, based on my knowledge, Stephen Wong Ka-lok is a professional race walker from Hong Kong. He has competed in various international events, including the Asian Games, World Championships, and Olympic Games. Wong has also won multiple medals in the Asian Championships and Asian Indoor and Martial Arts Games. Outside of his athletic career, he is also an experienced coach and has been recognized for his contribution to the sport of race walking in Hong Kong.