Battle of Mt. Dingjun

The Battle of Mt. Ding Jun was a battle between the forces of Liu Bei and Cao Cao. Liu Bei was seeking to control the culturally vital Hanzhong region, as well as open a path into Wei, while Cao Cao was trying to stop him. The two archers Huang Zhong and Xiahou Yuan developed a rivalry here, ending with Huang Zhong slaying Xiahou Yuan, and driving out Wei.

Dynasty Warriors
The Dynasty Warriors series really attempts to show the counter acts of Huang Zhong and Xiahou Yuan in the battle of Mt. Ding Jun. In all games in which the battle appears, a small rivalry takes place over the battle. Some installments have them exchange insuilts during the battle, while others have a cutscene prior to the battle, and when the two generals meet. In the end the player has the power to decide the ultimate victor, although normally if you leave the duel of sorts alone the opposing general to your force will claim victory.

After Hanzhong was secured, Liu Bei, under pressure from Zhuge Liang, declared himself King of Hanzhong, prompting Guan Yu to launch a secondary offensive on Fan Castle, which started a chain of events that lead to Shu's crippling defeat at Yi Ling.