In view of the lessons of Wang Mang, Emperor Guangwu of Han Dynasty changed the conquest of ethnic minorities and Wang Mang's great nationalism since Emperor Guangwu of Han Dynasty, and set out his own set of ethnic policies from the general policy of recuperation, thus providing a peaceful external environment for the economic recovery and development of the Eastern Han Dynasty. For example, to "escape politics" to stabilize the border and not to go to war; Pay attention to cooperative development and implement supporting policies; Try out the policy of "controlling borders by borders" and adopt the policy of "autonomy". From the mainstream, Emperor Guangwu adopted a policy of friendliness, fraternity, autonomy and mutual assistance to the surrounding ethnic minorities, which belongs to the rule of virtue. These policies have successfully alleviated ethnic conflicts and avoided large-scale wars. The business of copper capital Dayi is booming, and the footprints of businessmen are as far away as the western regions and abroad.