Keumgang (meaning diamond) has the significance of “hardness” and “ponderosity”. The Mt. Keumgang on the Korean peninsula, which is regarded as the center of national spirit, and the “Keumgang yoksa”(Keumgang warrior) as named by Buddha, who represents a mightiest warrior, are the background of denominating this poomsae. New techniques introduced in this poomsae are batangson teok-chgi, hansonnal momtong an-makki, Keumgang-makki, santeul-makki, kheun doltzeogi (large hinge), etc., and the hakdari-seogi. The poomsae line symbolizes a mountain displayed by the Chinese letter. The movements should be powerful and well-balanced so as to befit black-belter’s dignity.