Records of the Three Kingdoms
Neither of these works are extant, however a volume of the "Weilüe" was quoted as an extensive footnote to the "Records of the Three Kingdoms" in the (30th) section on the Wuhuan, Xianbei and Dongyi by Pei Songzhi during the fifth century. It served as an additional guide to the Western Regions on the book. The volume has only survived because it was included as an extensive note to "Records of the Three Kingdoms".