In the original work, Daxia corresponds to the Western Wei Dynasty, and Yan Xun and Yu are both aristocratic children of this country. Yan Xun's family is the king of this country with different surnames, and has the right to return the land and guard a frontier. Later, Yan Xun's family was destroyed by the emperor, I was a nobleman in the Western Wei Dynasty, I was the fourth young master of the Yu family, and Xiao Ce, the third male, was the prince of Nanliang, and Nanliang corresponded to the side hall in the book. The play belongs to the Southern Dynasties and the Western Wei Dynasty belongs to the Northern Dynasties.