Xi was a Chinese character that was often used as a surname, and it ranked high among the hundred surnames. The surname Xi originated from the surname Ji, which was one of the surnames of the Zhou Dynasty. According to the records of the Hundred Family Surnames, the long history of the surname Xi can be traced back to 1046 B.C. It is an ancient surname in Chinese history. In China, the population of the Xi surname is mostly distributed in the southern provinces of Guangdong, Fujian Province and Guangxi Zhuang Autonomous Region.