Migration and Distribution (Lack of information) The Ru surname is not listed among the top 100 surnames in the Mainland and Taiwan. Among the nomadic Xianbei people, the predecessors of the Northern Wei Dynasty, there was the Pulouru clan, and their descendants simplified it to the "Ru" surname, which is the earliest origin of the Ru surname. In addition, there was a tribe called the Rouran people at that time, also known as the Ruru, Ruirui, and Ruru people. During the Northern Wei Dynasty, they entered the Central Plains and established the Rouran Kingdom. The clan members took the previous clan name as their surname, either Rou, Ru, or Rui, and the Ru surname thus emerged. For the Han people, the Ru surname also has a relatively independent origin and development. In the Han Dynasty, in the territory of Henei Prefecture, there was a person named Ru Chun. His descendants added a grass - radical to his surname, changing it to the character "Ru". From this, the Ru surname also appeared among the Han people.