Instead, these first Emperors constructed their office as a complicated collection of offices, titles, and honours, that were consolidated around a single person and his closest relatives (while in the republic the "taking of turns", often in shared offices, had been the principle for passing on power).
This was seen both as a reaction to the supposed vacancy of the Eastern Empire, due to the presence of a woman, Irene on the throne in Constantinople, and as a revival of the Western Roman Empire, and descendants of Charlemagne continued to be crowned in Rome through the 9th century.
In 913 Simeon I of Bulgaria was crowned emperor (tsar) in a makeshift ceremony officiated by the Patriarch of Constantinople and imperial regent Nicholas I Mystikos outside of the Byzantine capital.
Emperor Guangwu (January 15, 5 BC - March 29, 57), born Liu Xiu, was an emperor of the Chinese Han Dynasty, restorer of the dynasty in AD 25 and thus founder of the Later Han or Eastern Han (the restored Han Dynasty).
The prince of Changsha was a brother of Emperor Wu, a famous emperor of the Former Han, and he was the son of Emperor Jing.
Emperor Gengshi's regime was only able to obtain nominal submission from many regions of the empire, and one of the trouble region was the region north of the Yellow River.