Even though association football remains one of the most popular sporting activities in South Korea, the martial artwork of taekwondo is regarded as the nationwide sport.Even so the Sui army was lured right into a lure by the famed Koguryŏ commander Ŭlchi Mundŏk, and experienced a calamitous defeat on the Salsu (Ch'ŏngch'ŏn) River. It is said