the so-called toast system is the toast system. After the Qin Dynasty unified Lingnan, the system of floating officials in counties and counties was implemented in plain areas with convenient transportation, and the hereditary system of local officials (chieftains) was implemented in remote mountainous areas beyond the reach of the Qin Dynasty. The main feature of this political system is that the central ruling class of the feudal dynasty used the old nobles of ethnic minorities to rule politically, and economically "let the original mode of production continue and be satisfied with collecting tribute", which is the class essence of the "toast system". The toast system, which began in the Tang Dynasty as a "restraint system", was formed in the Song Dynasty, flourished in the Ming Dynasty, collapsed in the Qing Dynasty, and ended in the early 2th century, lasting for 1, years. "