Yan's surname did not enter the top 100 in Taiwan Province province. Yan surname comes from Ji surname and Zi surname. After Zhou Wuwang and Ji Fa defeated the Shang and Zhou Dynasties, they were enfeoffed by various governors. One of them, Ji, was made king in Yan Di (now northern Hebei Province and western Liaoning Province). Later, at the end of the Warring States period, Yan was destroyed by Qin. The descendants of Ji family took the country name as their surname, called Yan family, and formed Yan family. There is also a Yan surname that can be traced back to the Shang Dynasty. At that time, a nobleman named Bo Shu was sent to Yan Di (now Yanjin County, Henan Province) and established the State of Yan. Uncle's descendants also took Yan as their surname, which is another source of Yan's surname today. In ancient times, most of Yan's aristocratic families came from Shanggu. Ranked 3 15 in the Song Edition of Hundred Surnames.