废帝
After recovering Shouchun, he asked Chi Chao whether the humiliation at the Battle of Fangtou had been removed—and Chi honestly told him that it had not. Instead, they planned an alternate strategy to try to showcase Huan's power—deposing Emperor Fei. Because Emperor Fei had been cautious in his behavior and lacked faults, they decided to spread rumors that Emperor Fei was impotent and unable to bear children—and that his sons, by his concubines Consort Tian and Consort Meng, had in fact been biological sons of men whom he favored, Xiang Long (相龍), Ji Hao (計好), and Zhu Lingbao (朱靈寶). (The rumors also implied a homosexual relationship between Emperor Fei and Xiang, Ji, and Zhu.) He then went to the capital and intimidated Emperor Kang's wife, Empress Dowager Chu, to issue an edict that he had drafted deposing Emperor 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.)