Grandmaster Lim has over 45 years of teaching and training experience in the ancient martial arts of Komdo,Taekwondo, Hapkido and various other arts forms. Grandmaster Lim has developed a system which is exclusively taught at the USMA, which uniquely blends the best of the ancient martial arts; Komdo, Taekwondo, and Hapkido. This system is indeed a modern application of the ancient and traditional martial arts. Â