Yu was a native of present-day Xi'an, Shaanxi, and most notable for two works of his, the Weilue (Brief History of Wei), and Dianlue, which are listed in the Book of Sui as volumes 33 and 89 respectively. The Old Book of Tang listed 38 volumes of the Weilue and 50 volumes of the Dianlue, while the New Book of Tang 58 listed the Weilue as containing 50 volumes,.
Neither of these works are extant, however a chapter of Weilue was quoted as an extensive footnote to the Records of Three Kingdoms (composed by Chen Shou) in the (30th) section on the 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 Records of Three Kingdoms.
Yu apparently never left China, but he collected a large amount of information on the countries to the west of China including Parthia, India, and the Roman Empire, and the various routes to them. Some of this information had reached China well before Yu's time, and can also be found in the sections dealing with the Western Regions of the Records of the Grand Historian, the Book of Han, and/or the Book of the Later Han.
In spite of the inclusion of earlier (and sometimes fanciful) information, the Weilue contains much new, unique, and generally trustworthy material. Most of it dates from the late second and early third centuries CE. It is this new information that makes the Weilue such a valuable source. Much of it appears to date from the Eastern Han Dynasty, before China was largely cut off from the West by civil wars and unrest along its borders during the late 2nd century CE.
- See Tongshi Vol. 12, by Liu Zhiji (661-721).
- Hill (2004) Introduction.
- Chavannes (1905), pages 519-520.
- Ma Zhijie (1993). History of the Three Kingdoms: Yu Huan's Weilue. Beijing: People's Publishing House. pp. 406–410. ISBN 7-01-001271-7.
- Zhang Xinglang (1977). Collected Historical Sources of the History of Contacts Between China and the West Vol.1 : Weilue's Xirong on Daqin. Beijing: Zhonghua Shuju. pp. 38–43. ISBN 7-101-03030-0.
- Chavannes, Édouard (1905). Les pays d'occident d'après le Wei lio. T’oung pao Ser. 2:7. pp. 519–520.
- Hill, John E. (2004). The Peoples of the West from the Weilüe 魏略 by Yu Huan 魚豢: A Third Century Chinese Account Composed between 239 and 265 CE. Draft annotated English translation. University of Washington.