I give Ko Fung 5 out of 5 stars! I recommend Master (Sifu) Derek Chan’s classes to everyone, especially to women who want to learn self-defense.  I learn practical defense methods and improvements on my overall health (mind, body and soul).   I’m naturally clumsy and uncoordinated; Derek always has patience, detail and care in teaching and coaching me. He’s very knowledgeable and seasoned in his skill.  I wish I had more teachers like him growing up; he finds creative ways and uses a variety of teaching methods to help me understand the movements and to make class fun.