In 249, Wang Guang, the son of Wang Ling, allegedly commented: "Now Sima Yi cannot be fathomed, but what he does never runs contrary to the situation. He gives his assignments to the worthy and capable, and liberally credits those who are better than he; he practices the laws of the former rulers and satisfies the people's desire. Of whatever Cao Shuang did wrong, he has left nothing uncorrected. He does not relax his efforts day and night, his primary aim being to soothe the people."