Ilyeo means the thought of a great Buddhist priest of Silla Dynasty, Saint Wonhyo, which is characterized by the philosophy of oneness of mind [spirit] and body [material]. It teaches that a point, a line or a circle ends up all in one. Therefore, the poomsae Ilyeo represents the harmonization of spirit and body, which is the essence of martial art, after a long training of various types of techniques and spiritual cultivation for completion of Taekwondo practice.
The new techniques introduced in this poomsae are son-nal-olgul-makki, wesanteul-yop-chagi, du-son-pyo[two opened hands]-bitureo-jabadangkigi [twisting and pulling], twio- yop-chagi and the first stance of ogeum[knee back]-hakdari-seogi. Jumbi-seogi is the bo-jumeok-moa-seogi [wrapped-up fist moa-seogi], in which, as the last step of poomsae training, two wrapped-up fists are placed in front of the chin, which has the significance of unification and moderation, so that the spiritual energy can flow freely into the body as well as the two hands. The line of poomsae symbolizes the Buddist mark [swastika], in commemoration of saint Wonhyo, which means a state of perfect selflessness in Buddhism where origin, substance and service come into congruity.