The four major families in Japan: Yuan, Ping, Fujiwara, and Ju are all surnames used by people who became courtiers from the royal family given by the Emperor. Here is a brief introduction. The Yuan surname: It is said that the Yuan surname came from the story of the Emperor Shizu of the Northern Wei Dynasty. Because there were too many royal sons, the Cuo'e Emperor could not give all the official posts, so he divided some people into courtiers and gave them the Yuan surname. The descendants of Emperor Guangxiao all had this surname, and the most prosperous one was the Huan Wuping surname. Fujiwara: Nakhon Kanzu, Nakhon Bubi and others began to receive this surname. Later, they were divided into four families: South, North, Shih and Beijing. Many martial families who had marriage relations with Nakhon in the manor era also changed their surname to Fujiwara. Fujiwara has always been the mainstream of the public. Until the end of the curtain, Fujiwara still accounted for 80% of the public. The orange family: The surname given by Emperor Minda to his prince was less powerful than the other three families. During the rise of the Wu family (Yuan, Ping), there was no significant development. He was often married to the Tian royal family and the Fujiwara family. Based on this factor, the orange family was also listed as the Gongqing. Later, the political struggle with the Fujiwara family failed and gradually declined. The last descendant of the Ju family transferred to Ren Wu's Yi Yu Ju (Yuezhi) family, and Nanmu Zhengcheng was born in Yuezhi.