The 43rd chapter of Zhuge Liang's Wisdom and Calculation told the story of Zhuge Liang's service under Liu Bei. In this part, Zhuge Liang, Liu Bei, Guan Yu, and Zhang Fei discussed how to eliminate Cao Cao. In the end, they decided to join forces with Sun Quan to attack Cao Cao's forces. In the war, Zhuge Liang displayed his outstanding commanding ability and designed many ingenious strategies to help Liu Bei win many victories.