1, from Ji's surname. In the Tang Dynasty, Zhou Chengwang named his brother Yu Shu Tang Shuyu. After his son Xie succeeded to the throne, he was renamed Jin Hou because there was water in the Tang Dynasty. Zhou Xuanwang's son is still his father, and he was named Yang Hou when he lived in seclusion. In the Spring and Autumn Period, the State of Jin destroyed Yang, and Yang became the fief of the State of Jin. Emperor Wu of the Jin Dynasty (Sun Xie Di 10) named his second son Boqiao as Yang Hou, the ancestor of Yang's surname. Bo Qiao's grandson suddenly ate from the sheep's tongue. It was the doctor of the sheep's tongue, not for the sheep's tongue. Sun Gui, a sudden grandson, is also known as Uncle Gui. Due to Dai Jin's meritorious service, he was enfeoffed in the city, and his son named the city Yang. In 5 14 BC, the aristocratic family destroyed Jin, and the wanderer fled to Huashan Xiangu and lived in Huayin, which was called Yang in history and authentic in history.

2, from the surname. During the Three Kingdoms period, Zhuge Liang gave local ethnic minorities surnames such as Zhao, Zhang, Yang and Li after pacifying Ailao Yi (a branch of Hunan and Guizhou in Liao country).

3. From his surname to Yang. For example, after Fujian Lin moved to Meizhou, Guangdong, he changed his surname to Yang. According to "Northern History", the real name was Wei Chi, later changed to Yang.

4. Change his surname from his home. For example, after Emperor Xiaowen of the Northern Wei Dynasty moved the capital to Luoyang, the three-character surname Mohulu was changed to Yang.