In the 2nd year of Zhenming of the Later Liang ( 916 ) , Yelu Abaoji , the chief of the Khitan Tartars , declared himself emperor and named his state Khitan , after having defeated other tribes like Cige and Died .
后梁贞明二年(916),契丹族首领耶律阿保机凭借强大的军事力量,击败了的剌葛、迭剌等人,在龙化州称天皇帝,国号契丹。