Yang Yi
Wei Yan treated his soldiers well and was known for his bravery. However, he was also boastful of his talents and his peers tended to avoid him. Yang Yi, Zhuge Liang's chief clerk, made no concession to Wei Yan. Wei Yan was extremely resentful of Yang Yi. Whenever they got into heated quarrels, Wei Yan often drew his sword and brandished it in front of Yang Yi; Yang Yi sobbed as tears rolled down his cheeks. Fei Yi then stepped in to stop them from fighting and managed to keep them under control until Zhuge Liang's death. Zhuge Liang was upset by the lack of harmony between Wei Yan and Yang Yi, but was unwilling to side with either of them because he appreciated the talents of both men.