""King Geungusu was also called Hwisu. Geungusu was the son of King Geunchogo. Previously, Sayu, king of Goguryeo, himself came and invaded. King Geunchogo dispatched the crown prince to repel them, and he reached Bangeolyang and was goiung to give battle. A man from Goguryeo called Sagi, who was originally a man from Baekje and had mistakenly injured the hoof of the king's steed, feared punishment and fled to Goguryeo. Returning to Baekje at this time, he told the crown prince, "Their soldiers are many, but all of their numbers are meant to deceive you. The only valiant troops are the ones with the red banners — if you first break them, the other troops will not attack and flee of their own accord."