2. "Patrol Hunting" and "Mencius Gaozi" say: "The emperor should be a vassal, and it is a patrol hunting. Patrol hunters, patrol guards. " "Yaodian" is written as "patrol", which means to patrol and inspect the territory guarded by the princes for the emperor. Historical Records of the Five Emperors: "In February, I toured the East for hunting. As for Daizong, I saw the mountains and rivers. " Historical Records of Zhou Benji: "There are 90 years left in the end of the Han Dynasty. The son of heaven will seal Mount Tai, patrol Henan in the east, find descendants, and seal the land three miles after Jia Jia, Nanjun and Biliehou in posthumous title, so as to sacrifice it first." "Inauguration", pronounced shü u, is synonymous with "patrol" and "inspection", and it is a superior-subordinate relationship.