Fei. Emperor Fei was reduced to the rank of Prince of Donghai, and then further to Duke of Haixi, and put under heavy guard. Huan made his granduncle, Sima Yu, Prince of Kuaiji, emperor (as Jianwen), apparently believing that the easy-going Sima Yu would be easy to control. Meanwhile, he carried out several acts intended to both terrorize imperial officials and to affirm his power—he deposed Emperor Jianwen's brother Sima Xi (司馬唏) the Prince of Wuling, and killed many members of the honored Yin and Yu clans under false accusations of treason. (He wanted to kill Sima Xi as well, but Emperor Jianwen wrote humble letters to him begging for Sima Xi's life, and Huan was unable to insist on Sima Xi's death.) Hesitation at taking the throne and death In 372, Emperor Jianwen grew ill, and he issued four successive edits summoning Huan to the capital—a strong indicator that he was willing to yield the throne to Huan—but Huan declined each time, apparently believing that the edicts were a trap. Indeed, Emperor Jianwen initially drafted a will that stated, "The Grand Marshal Huan Wen shall be regent under the precedent of the Duke of Zhou," and "If the child can be assisted, assist him; otherwise, take the throne yourself," mirroring language that Liu Bei, the founding emperor of Shu Han, used when entrusting his son Liu Shan to Zhuge Liang. With Huan not in the capital to affirm it, however, Wang Tanzhi persuaded Emperor Jianwen to tear up the will and rewrite the instructions as, "All major affairs shall be submitted to the Grand Marshal, under the precedents of Zhuge Liang and Wang Dao," greatly reducing any legitimacy Huan might have if he should try to take the throne. Emperor Jianwen soon died, and was succeeded by his son Sima Yao the Crown Prince (as Emperor Xiaowu). With Huan not in the capital, actual power at the capital soon slipped into the hands of Xie An and Wang Tanzhi, a situation that greatly displeased Huan, who, however, when again summoned by Emperor Xiaowu and Empress Dowager Chu to serve as regent, declined. He did visit the capital in 373, and there was a rumor that he would execute Wang and Xie and then seize the throne. As Wang and Xie greeted him, however, he did not carry out the rumored actions, and after visiting the young emperor, returned to