Abaoji, chieftain of the Yila tribe, is named khagan of the Khitans.

Abaoji, posthumously known by his temple name as the Emperor Taizu of Liao, was a Khitan leader and the founding emperor of the Liao dynasty of China, ruling from 916 to 926. He had a sinicised name, Yelü Yi; some sources suggest that Abaoji's family name, Yelü, was adopted during his lifetime, although there is no consensus amongst historians on this point.

Khagan or Qaghan is a title of imperial rank in Turkic, Mongolic, and some other languages, equal to the status of emperor and someone who rules a khaganate (empire). The female equivalent is Khatun.

The Khitan people were a historical nomadic people from East Asia and parts of North Asia who, from the 4th century, inhabited an area corresponding to parts of modern Mongolia, Northeast China and the Russian Far East.

February 27 is the 58th day of the year in the Gregorian calendar; 307 days remain until the end of the year.