Yu Huan

Yu Huan was a scholar and author from the Cao Wei. He was a native of what's now , and most notable for his writing of his work Weilue, also known as Dianlue , though some scholars thought that it could be a separated work. Both of which are no longer extant, however a chapter of Weilue was quoted as an extensive footnote to the Records of Three Kingdoms in the section of Wuhuan, Xianbei and Dongyi by Pei Songzhi during the 5th century, it served as an additional guide to the Western Regions on the book. The chapter has only survived because it was included as an extensive note to it.