Prince of Chu
Wang Ling, the Grand Commandant, and his nephew Linghu Yu (), the Inspector of Yan Province, became worried of Sima Yi's growing influence over the emperor, Cao Fang, so they plotted to replace Cao Fang with Cao Biao, the Prince of Chu, while instating his capital city as Xuchang, and then to overthrow Sima Yi. Linghu Yu, however, died in December 249 or January 250.