How many times was the Battle of Yiling in the Romance of the Three Kingdoms?

The Battle of Yiling was the last large-scale war of the Three Kingdoms period after the Battle of Red Cliff, which was the story from chapter 21 to chapter 23 of the Romance of the Three Kingdoms. In this war, Liu Bei and Sun Quan's allied forces fought fiercely against Zhou Yu and Zhuge Liang of Dongwu. In the end, Liu Bei won, but he also lost a lot of people and property. The Battle of Yiling was also one of the most important battles in the Three Kingdoms Period, which had a profound impact on the political and military situation at that time.