Tannian has the moral of integrity, purity, youth and liveliness. Tan refers to clouds, also refers to surname. When used as a person's name, it means clear, honest, and pure. Year refers to the period, era, age, and the time of the sun's week. As a name, it means youth and liveliness.
The origin of surnames can be traced back to the period of matriarchal clan system in primitive human society, so many ancient Chinese surnames are beside or at the end of female characters. The surname is a specific symbol to distinguish the clan, such as the name of the tribe or the name of the tribal leader. It is said that the Yellow Emperor lived near Ji River and took Ji as his surname; Emperor Yan lived next to Jiang Shui and took Jiang as his surname. The emperor took Dayu's contribution to the flood control and gave him the surname Si. In addition, the sons of tribal leaders can also have family names. The Yellow Emperor had twenty-five sons, fourteen of whom were surnamed Ji, You, Qi, Ji, Teng, Ren, Xun, Xuan, Xi, Ji, Xuan and Yi. Four of them belonged to two surnames. After Zhu Rong, there were eight surnames including Ji, Dong, Peng, Tu, Yun, Cao, Zhen and Mi, which were called Zhu Rong's eight surnames in history.