Tan (Tán) has three surnames: 1. Following Tan Boda, the Shang Dynasty, Si Kou Su Fensheng and Minister Tan Boda were sealed in Hanoi in the early Western Zhou Dynasty. Some of Tan Boda's descendants took their ancestral surname Tan as their surname, known as Tan's, and lived in his seal for generations, so there were Tan's in Henan and Hanoi. 2. In the Spring and Autumn Period, Jiang was named after the feudal city. According to "Records of Tongzhi Imperial Clans III" quoted from "Customs Tong", "Tan and Shi have food in Tancheng because they think they are their home." During the Spring and Autumn Period, a Qi Huangong collected grain (fiefs) in Tancheng (now north of Ziyang County, Shandong Province, and now Xiyang County, Shanxi Province), and some of his descendants named the city as Tan Shi. On the other hand, Jiang Ziya helped Zhou Wuwang destroy the business, so Zhou Wuwang gave him a sandalwood stick and named him sandalwood. Some of his descendants took Tan as their surname. Tan Gong in the Warring States Period is the descendant of this Tan family. 3. Among the ancient Xianbei people, there is a recorded Tan family.