曹爽
Cao Shuang was desperate for a victory to boost his own fame so he selected Shu Han, Wei's other rival state, as his target. Leading an army numbering over 60,000 troops, Cao Shuang invaded Shu territory in March 244. However, two months later, he lost to Shu forces led by Wang Ping and Fei Yi at the Battle of Xingshi and barely escaped back to Chang'an. Cao Shuang's popularity and influence dropped to a new low after his defeat. At the same time, Sima Yi's popularity and influence further increased due to his opposition to the campaign from the start. Potentially to deceive Cao Shuang into letting down his guard, Sima Yi stopped engaging in any political activity in May 247 and retired on the grounds of illness. He went on further to pretend to be ill and senile. In the same year, Cao Shuang followed the advice of Li Sheng, Deng Yang and Ding Mi in order to maintain his power.