《元史·列传·卷七》
赛夷本西域一部族之酋长，后来就以赛夷为该部族之名。 火者 为官名。
赛夷，西域部之族长也，因以为氏。火者，其官称也。
The Saiyi were originally the chieftains of a tribe in the Western Regions, and later on Saiyi came to be the name of that tribe. Huozhe was an official title.