Ancestor: Cao Xie

Classification: country as surname

Source of surname:

1, from Cao, is a descendant of Emperor Zhuan Xu. According to legend, Emperor Zhuan Xu had a grandson named Lu Zhong, and he had six sons. Among them, the fifth son named An, surnamed Cao, was sealed in Cao (now southwest of Dongdingtao County, Shanxi Province). After Zhou Wuwang destroyed the business, his brother Zhen Duo was named Cao Shu Zhen Duo in Cao State. Cao, later renamed Cao An, originally belonged to Guo, belonging to Luzou County. During the Spring and Autumn Period, it was spread that when they saw the dominant princes, they attached themselves to the State of Qi and entered the viscount country, also known as Zhulou. During the Warring States Period, Guo Weichu was destroyed, and later generations took the country name "Guo" as their surname. Later, someone went to town with Zhu as his surname and called Zhu.