1, the ancient Liao country is in today's Mongolian Plateau, Heilongjiang River Basin, which includes today's three northeastern provinces, and even developed to Inner Mongolia and other regions.

2. The Liao State was first established by Yelubaoji, and it was named as the Khitan State at the beginning. The reason why the Khitan State grew and developed was mainly because the sixteen states of Yanyun were occupied by the Khitan in the Song Dynasty, which made the Khitan develop rapidly and the national strength gradually increased. After the founding of the People's Republic of China 30 years ago, the military and national defense of the Khitan Kingdom reached its peak, and it gradually became a menace to the Song Dynasty.