2. Yan surname originated from Zhuang surname, which is one of the typical surnames in southern China. History of the Eastern Han Dynasty, for fear of Liu Zhuang, changed his surname to Yan. Take Yan Ji as the ancestor. During the Wei and Jin Dynasties, some Yan surnames were Zhuang surnames, so they were called "solemn families". The population of Yan surname is mostly in Hubei, Jiangsu, Zhejiang and other provinces, and the population of Yan surname in the three provinces accounts for more than half of the Han population in China.