Tusi was a compromise when the central dynasty conquered ethnic areas in order to avoid war casualties. The central dynasty recognized the ruling power of tribal leaders in ethnic areas. These leaders expressed their obedience by accepting the appointment of the central dynasty. They could keep their own local armed forces of a certain scale and inherit local management positions, which was different from the "floating officials" appointed by the court. They were called "Tusi". The highest grade of Tusi in Ming and Qing Dynasties was five, which was equivalent to the magistrate. The wooden toast in Lijiang should be five products. Of course, their actual scope of power is greater than that of the magistrate. However, the imperial court was also very suspicious of them, and whenever there was an opportunity, it would "change the soil and return to the flow."