Princess Duan (段王妃, personal name unknown) (died 358), formally Empress Chengzhao (成昭皇后, literally "the successful and accomplished empress") was the first wife of the Former Yan general Murong Chui, who would later become the founder of Later Yan.
Because she came from an honored lineage (originally on par with Former Yan's imperial clan, the Murongs), she did not respect Murong Jun (Emperor Jingzhao)'s wife Empress Kezuhun, and Empress Kezuhun despised her greatly.
In 358, perhaps at her instigation, the eunuch Nie Hao (涅浩) falsely accused Princess Duan of witchcraft.
The results are dire, and I will not do this.As she was interrogated, Princess Duan replied logically and openly, and Murong Chui was able to avoid being dragged into the case, but she still died in prison, either from the torture or a secret execution.
Murong Chui subsequently married her sister, and then her niece Duan Yuanfei as his wife.