A Chinese compound surname is a Chinese surname using more than one character. Many of these compound surnames derive from Zhou dynasty Chinese noble and official titles, professions, place names and other areas, to serve a purpose. Some are originally from various tribes that lived in ancient China, while others were created by joining two one-character family names. Only a few of these names (e.g. Ouyang [歐陽/欧阳], [上官], Sima [司馬/司马], Zhuge [諸葛/诸葛], Situ [司徒], Xiahou [夏侯], Huangfu [皇甫], and Huyan [呼延]) can still be found quite commonly in modern times with Ouyang, Shangguan, Sima and Situ appearing most frequently. Many clans eventually took on a single-character surname for various reasons. Chinese surnames with more than two characters are mostly not of ethnic Chinese origin (e.g. Xianb