Xiakou

In the Battle of Xia Kou, Sun Quan attacked Huang Zu, along the Chang Jiang in Jing Province, because Huang Zu killed Sun Jian, Sun Quan's father in the earlier Battle of Jing Province. Gan Ning kills Ling Cao, the father of Ling Tong, starting a rivalry between the two once the former joins Wu after the battle.

Dynasty Warriors
In Dynasty Warriors 5, players can select either Sun Quan's forces or Huang Zu's forces. With Sun Quan, your main objective is to stop Huang Zu's fleet and then defeat him. This can be achieved by going straight for Cai Mao and Gan Ning. Then traverse north to Huang Zu. Taking out all Huang Zu's officers outside the fortress should lower his morale, doing so will make him more vulnerable.

With Huang Zu's forces, players are to tasked protected the fleet and defeat all the generals and sub-generals. Zhou Yu isn't part of them so you won't need to go for him. But leaving Zhou Yu could mean that he meets with Cai Mao's fleet and defends when they land at the camp. After they land, Sun Quan will be no trouble.