Pronounced xian (falling tone) in Yùpiān, sang (falling tone) in Guǎngyùn, and sù (falling tone) in Jíyùn. The pronunciation is the same as "sù" (素). It means familiar or knowledgeable. It is also used as a personal name. For example, Xīxiàn and Yǔxiàn, as recorded in the "Table of Imperial Relatives" (Zōngshì Biǎo) in the History of Song (Sòng Shǐ).