Jun Hwan Bup - (Spinning Principle) The 10 techniques taught in this particular set teach the student to apply the principles of Yu-Won-Hwa‎ ("soft-circular-blending" are the three core concepts on which the art of Kuk Sool is based) in a smooth and circular manner while maintaining proper body motion in order to transfer a rapid spinning motion into his/her attacker (if done properly, this should make the attacker lose his balance).