Fan declined, claiming that the year 304 would be an auspicious date (jiazi) for someone from the Li family to take the throne. Fan Changsheng then served as the Chancellor of Cheng-Han under Li Xiong.
Fan refused the position, arguing that the year 304 was an auspicious time (jiazi) for a member of the Li family to become emperor.  Afterward, Fan Changsheng became the Chancellor of Cheng-Han under Li Xiong.