Xiliao (1124~1218) was a country established by the ancient Khitan people.Also known as the Black Khitan, Hara Khitan, and the Second Khitan Dynasty.Yelu Dashi, the founder of Western Liao Dynasty, was the eighth-generation grandson of Yelu Abaoji, the founding monarch of Liao Dynasty. He was named Chongde.The founding monarch of Western Liao, Yelu Dashi, was named “Liao” to indicate that he inherited the Liao Dynasty. Because it was different from the previous Daliao built by Yelu Abaoji, it was called Western Liao.