Professor Qiao Mu immigrated.

1, from the surname. According to legend, when Yao controlled the water in the Central Plains, Yao sent Gun to control the water, and Gun used blocking method, which failed. It is said that Gun's wife, dream of eating, married Coix lachryma, woke up pregnant and gave birth to Yu. After Shun ascended the throne, Yu, the son of Gun, was appointed to control the water, and Yu adopted the method of dredging, and the result was successful. After Yu succeeded in harnessing water, Shun took Yu as his surname.

At the beginning of the Zhou Dynasty, when he became a vassal, a branch named Si was founded in Tan State (now west of Zhangqiu County, Shandong Province), with the title of Zi. At the beginning of the Spring and Autumn Period, he became the overlord, and Zhouzhuang annexed Tan in the fourth year (683 BC). Tan's son fled to Juguo (now Juxian County, Shandong Province). Children and grandchildren take the country as their surname, and they are called Tan's, which is called authentic in history and Tan's in Shandong.

2, from the ancient southwest minority. According to the genealogy of Wan surname, the six surnames of Banan (present-day Yunnan and Guizhou) are Tan, claiming to be descendants of Pangu, and Wanghongnong is Yungui Tan.

Extended data:

Tan's genealogy:

Shandong: There is a village called Guotan in Yuncheng County. The whole village is surnamed Tan, and there are others in other towns and villages. Anqiu City, Weifang has a village "Yu Qiu Village, Tan Jia". All the surnames in the village are "Tan", except for the foreign surnames, it is the true descendants of Tan. During the Hongwu period, drought and plague occurred in Shandong Province, and they moved here. There is a "Tan Family Tree" hidden in the village. The original whereabouts are unknown, and later generations have addenda.

Jiangsu: Tan Family Tree in Pilinggang Lane, Wujin

Zhejiang: twelve volumes of the Tan family tree in Xiaoyi, Xiaoshan, ten volumes of the Tan family tree in Jiaxing, and the first volume of the Tan family in Jiaxing.

Hubei: There are four volumes of Tan's Genealogy in Xinzhou, thirteen volumes of Tan's Genealogy in Biyang (revised in nine years of the Republic of China), four sets of Tan's Genealogy in Biyang (revised in 1989) and Tianmen (revised in fifteen years of the Republic of China).

Shaanxi: Tan family tree in Tanjiabao, Chencang has three volumes and one spectrum.

Jiangxi: Nanfeng Tan's Genealogy, Volume 20, Volume 1.

Reference source; Baidu Encyclopedia-Tan surname