司马颙
In late 304, when Emperor Hui was forcibly taken from the capital Luoyang to Chang'an, then under the control of the regent Sima Yong Prince of Hejian, Prince Chi was forced to accompany the emperor. In early 305, when his more ambitious brother Sima Ying the crown prince was demoted back to Prince of Chengdu by Sima Yong, Prince Chi was created crown prince to replace him. He was initially going to decline the honor, believing that his nephew Sima Qin () the Prince of Qinghe and one-time crown prince should be returned to that position, but was persuaded to accept by his associate Xiu Su (). Later, after Sima Yue the Prince of Donghai defeated Sima Yong in 306, Crown Prince Chi accompanied Emperor Hui and returned to Luoyang.