In August 241, the Wei imperial court added two counties to Sima Yi's marquisate as a reward for his contributions; at the time, Sima Yi's marquisate spanned four counties and covered 10,000 taxable households. 11 of Sima Yi's relatives were also enfeoffed as marquises. As Sima Yi gained greater glory for his achievements, he behaved in a more humble and modest manner. For example, whenever he met Chang Lin (), who was from the same hometown as him and held the position of Minister of Ceremonies in the Wei imperial court, he bowed to him in a respectful manner. He also constantly reminded his siblings, children, and younger relatives to be mindful of their conduct. In the spring of 242, Cao Fang bestowed the posthumous title "Marquis Cheng of Wuyang" () upon Sima Yi's deceased father, Sima Fang.