[1] Duan Jifei's older sister Duan Yuanfei was the empress of Murong De's older brother, Murong Chui, the founding emperor of Later Yan.
In 400, he declared himself emperor and created Duan Jifei empress.
The 406 plot was the last reference to Empress Dowager Duan in history.
In 408, after Murong Chao ransomed his mother Lady Duan back from Later Qin, he honored his mother as empress dowager, implying that Empress Dowager Duan Jifei might not be still alive at that point, or was deprived of her empress dowager title.
(There was a reference in the Zizhi Tongjian that stated, "Empress Dowager Duan of Yan's title was removed, and she went to reside in a different palace";[3] the modern Chinese historian Bo Yang opined that referred to Later Yan's Empress Dowager Duan.