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.
Emperor Muzong of Tang
Emperor Muzong of Tang (July 26, 795 – February 25, 824), personal name Li Heng, né Li You (李宥) (name changed 812), was an emperor of the Tang Dynasty of China. He reigned from 820 to 824. Emperor Muzong was the son of Emperor Xianzong. He was created crown prince in 812 during the reign of Emperor Xianzong and, after Emperor Xianzong was allegedly assassinated by a eunuch, Li Heng was proclaimed emperor in 820.