Xia in Chinese is written 夏 (summer), 霞 (the glow of sunrise or sunset clouds), or 厦 (a large building). The summer character is also the name of the legendary Xia dynasty, traditionally the first Chinese dynasty.
Xia is used as a Chinese girls' name particularly in southern China. The pinyin romanization Xia represents a sound (something like "shee-ah") that English speakers often find tricky — but the meanings are radiant.
Xia reduces to eight — the number of sunrise authority.