Chang De (821)

From the Silk Road site:

Primary sources:

"Si Shi Ki (Xi shi ji): Record of an Embassy to the Regions in the West," Ch. 4, in E. Bretschneider, Medieval Researches from Eastern Asiatic Sources, Vol. I (NY: Barnes and Noble, 1967; repr. of 1888 ed.), pp. 109-156. Bretschneider has compared the various Chinese eds. of the text and claims that his translation is substantially more accurate than two partial French versions of the text. He intersperses useful information on Hülegü's campaign from the biography (in the Yüan Shih) of Kuo K'an, a general who participated in the campaign.