Wu Bahu is the King of Ji Nation.
He wanted to exterminate the Di Family so he said that his daughter was sick and that she needed the eyes of one of Di Shan's Daughters.At least this is what Di Jiu thought before going back to his homeland.
Before dying Wu bahu admitted that he was the one who killed Di jiu's brothers.
Di jiu killed his son and Ge Yi in front of him then his clan.