Subyockcigi and t'aekkyon are considered the two greatest examples of traditional martial art forms native to Korea. The former is based on three principles - Heaven, Earth and Humankind - and incorporates the dualism of yin and yang found in nature.
Subyockc igi is very powerful compared to other martial arts, but it forbids indiscriminate killing and tries to transmute lethal forces into positive, life-enhancing forces. Subyockc igi as we know it now was preserved by a handful of practitioners through the Japanese occupation period.
In fact, with its emphasis on courtesy, loyalty, and harmony, it is widely considered the oldest of the traditional Korean martial arts.