Yeluboji, the leader of the Khitan nationality, was called the "Emperor of Heaven" on February 27th, 907. On March 7th, 9 16, Yeluboji became the "Great Sage and Great King" with the title of "Khitan". In 9 18, the capital was Huanglinfu (now Nanpolo City, Balinzuoqi, Chifeng City, Inner Mongolia). In 936, it went south to the Central Plains, and after the Five Dynasties' attack, the Jin Dynasty changed its name to "Da Liao", changed it to "Qidan" in 983, and changed it to "Da Liao" in 1066, until it was destroyed by the Jin Dynasty on March 26, 2025. In addition to the Liao Dynasty, the Khitan nationality also established related countries. As early as 1 122, Ye Luchun became the emperor in Nanjing, Liaoning Province, and was called the Northern Liao in history, because Emperor Tianzuo fled to Jiashan in the north. After the demise of the Liao Dynasty, from 1 124 to 1 130, Yelvshi led troops to Ketun City in northern Mongolia, also known as "Northwest Liao". The Western Liao Dynasty was founded in 1 123 with the troops marching westward. Later, it expanded to Central Asia, and the capital Husuluduo (now Bulana near tokmak, Kyrgyzstan) became a powerful country in Central Asia for a while. 12 18 was destroyed by Genghis Khan's Mongolian army.
Historians' most widely accepted view on the meaning of "Khitan" is the meaning of forged iron or sword. Later, the title was changed to "Liao", which also means "iron". At the same time, "Liao" is also the name of Liaoshui, the birthplace of the Qidan people, to show that they never forget their roots. In addition, the Khitan fought against the Central Plains regime in the south for a long time, calling itself the "Northern Dynasty", and the Central Plains dynasty was the "Southern Dynasty".
At the peak of Liao Dynasty, its territory reached the Sea of Japan in the east, Altai Mountain in the west, Ergon and Daxing 'anling in the north and Baigou River in the south of Hebei. The Khitan nationality used to be a nomadic people, and the emperor of Liao Dynasty made agriculture and animal husbandry develop and prosper together, each in its proper place, and established a unique and relatively complete management system. The focus of the Liao Dynasty was on the developed ethnic areas. In order to maintain the national, nomadic and agricultural nationalities were ruled separately, they advocated custom rule and created a bicameral political system. Create the Khitan script and preserve their own culture. In addition, it absorbed the cultures of Bohai Sea, Five Dynasties, Northern Song Dynasty, Xixia and Western Regions, which effectively promoted the political, economic and cultural development of Liao Dynasty. The military power and influence of the Liao Dynasty covered the western regions, so after the demise of the Tang Dynasty, Central Asia, West Asia and Eastern Europe all took the Liao Dynasty (Qidan) as the representative title of China.