《明史·列传·卷七十二》
虽然设四王安抚他们，但其入朝进贡必须有节制。使其不造成边患。
虽设四王抚化，其来贡必有节制，使不为边患。
Although four kings have been set up to appease them, their entry into the dynasty to pay tribute must be restrained. So that they do not cause border troubles.