Yelü Bei [SEP] father
) as a Later Tang subject, was the eldest son of Emperor Taizu of Liao, the founder of the Liao Dynasty. He was declared successor to the Emperor Taizu in 916, but never succeeded to the throne. Rather, after the accession of his younger brother Yelü Deguang (Emperor Taizong), he fled to the Shatuo Later Tang, where he was killed in 937.
Background.
Yelü Bei was born in 899, before the founding of the Khitan empire (which would later become known as Liao Dynasty
It used Dongdan as its Chinese name, which means the east Dan Gur, in respect to the West Liao dynasty.
However, political tension soon evolved between Yelü Bei and his younger brother Yelü Deguang, who took the imperial throne of Khitan after their father Yelü Abaoji died, en route to his homeland from a relatively successful campaign against the Later Tang. The new emperor ordered his elder brother to move his capital from Huhan in Eastern Manchuria to Liaoyang in Western Manchuria.
Bei obeyed the imperial order but soon fled