Sima Fu
After Cao Mao's death, the public called for Jia Chong's execution on the grounds that he had committed regicide. Sima Zhao forced Empress Dowager Guo to posthumously demote Cao Mao to the status of a commoner, and then ordered Wang Jing and his clan to be executed. The following day, after pleas from his uncle Sima Fu, Sima Zhao asked Empress Dowager Guo to posthumously instate Cao Mao as the "Duke of Gaogui" (高貴鄉公) and bury Cao Mao with the ceremonies befitting that of a prince, though this was not actually done. Cao Huang (later renamed to Cao Huan), the Duke of Changdao (常道鄉公), was chosen to succeed Cao Mao and was installed on the throne. 19 days later, Sima Zhao had Cheng Ji and his family executed to appease public anger but Jia Chong was spared.