After from QiXing and ji for the yellow emperor XuanYuanShi.Legend emperor yao XuanYuanShi great-great-grandson, the yellow emperor is the name of the qi, put Yun, yao is his writings.finally.He was originally banned in tao, moved in the tang dynasty, so called tao down.Be right after, began to "tang" to the title, so also called rhodium.Yao did in 100 right after the meditation to shun, after the death of yao shun named his son Dan zhu tang hou, hopei, (today).To ji fa Tang Hou insurrection was a king, Tang Guo land change is a letter to a Wang Zhidi shu yu of tang, the emperor yao's descendants were moved to dupont, called Tang Dushi.Tang Dushi seed for the surname, called down.Of the sons of shu yu of tang also for the surname, and then last name tang.Zhou Zhao king at the same time, was named after Dan zhu in the lu county Tang Hou, destroyed by the chu, after their sons also name is tang.In the spring and autumn, and there is a ji tang principalities, destroyed by the ChuZhao king, then people also called down.These four down, all derived from XuanYuanShi.

When the eastern han dynasty tang beginning with his family to join.Such as the southern white Wolf Wang Zhongyou tang;West gansu (now gansu) also have tang qiang.