The generation with this surname began to exist in the Han Dynasty. Before the Han Dynasty, people with the same surname would change their surnames after moving to a new place. However, in the Han Dynasty, surnames merged and their surnames and surnames became the same. At this time, people who moved to a new place could no longer change their surnames because That was the surname, so a new method came into being. This is the generation. The seniority is arranged differently and represents different places.