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 can retain a certain scale of local armed forces and inherit local management positions, which is different from the "floating officials" appointed by the court. They are called "Toast". The highest rank of chieftain in Ming and Qing Dynasties was five, which was equivalent to county magistrate. Lijiang's wooden toast should be five products. Of course, their actual scope of power is larger than that of magistrates. However, the imperial court is also very suspicious of them, and it will "return to the native land" whenever it has the opportunity.