Fifty years ago, the former dynasty was overthrown, and the two generals divided their borders, and the north and the south were divided. Dazhao and Yongjia share the same culture and etiquette, and have the same origin and restrain each other, forming the core of the world's confrontation; the three forces of Shuobei, Southern Xinjiang, and the Western Border mercenaries are separated in the corners, forming a stable and troubled world pattern of "two powers confronting each other and three forces checking and balancing".