Emperor Ai of Tang
In 904, Zhu forced Emperor Zhaozong to move the capital from Chang'an to Luoyang, which was even more firmly under his control. Later that year, fearing that the adult Emperor Zhaozong would try to rise against him while he was away on campaigns against other warlords, he had Emperor Zhaozong assassinated. Bypassing Li Yu and the other older princes, he had an edict issued in Emperor Zhaozong's name creating Li Zuo crown prince and changing his name to Li Chu. Shortly after, Li Chu took the throne (as Emperor Ai). Empress He, who survived the assassination, was honored empress dowager.
Empress Wang (Yang Pu)
Empress Wang (王皇后, personal name unknown), known as Empress Rang (讓皇后, "empress of the emperor who yielded") during Southern Tang, was the wife and empress of Yang Pu (Emperor Rui), the final ruler of the Chinese Five Dynasties and Ten Kingdoms period state Wu. As he was the only ruler who claimed the title of emperor, she was the only person to carry the title of empress during Wu.