NOT KNOWN DETAILS ABOUT KOREA

Since the mountainous region is totally on the jap Component of the peninsula, the principle rivers often movement westwards. Two exceptions would be the southward-flowing Nakdong River and Seomjin River.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