S1·E30 The Hanging of the Wolong

When Zhou Yu attacked Nan County, he was struck by a poisoned arrow. When Zhuge Liang takes advantage of the chaos and uses a plan to take Nan County, Jingzhou and Xiangyang first, Zhou Yu suffers a recurrence of his arrow wound. When he fell ill, Zhou Yu tried to take Jingzhou, but Zhuge Liang was able to see through it. He died in a fit of resentment, saying, "If you are born with Yu, why should you be born with Liang? When Zhuge Liang learns of Zhou Yu's death, he decides to go and offer his condolences.