1, here's your last name, after Kunwu in the Zhou Dynasty. According to the Records of Yuanhe's Genealogy and Su Xun's Genealogy, Zhuan Xu Emperor Sun Wu returned to Huozheng and gave birth to Lu Zhong, a lifelong lover of Kunwu. His descendants were very angry, were sealed in the Soviet Union, and then moved to the capital. Later generations took this place as their surname and called it Su's.

2. change your surname from a foreign country. After the Qin and Han Dynasties, the northern tribes gradually became stronger and invaded and expanded to the south. In the Wei, Jin, Southern and Northern Dynasties, the wars in the north continued year after year, and the regime of the Central Plains changed frequently. A large number of northern nationalities entered the Central Plains, and the Central Plains people moved south to the east, and a large number of foreign genes began to blend into the northern Han people.

The foreigners who joined the Su surname group mainly included: Su surname of Wuhuan Department in Eastern Liaoning in Han and Jin Dynasties, Buluo nationality of Xianbei nationality in Northern and Southern Dynasties, Su surname of Tangut in Xixia in Northern Song Dynasty, and Su surname of Jurchen nationality in Jin Dynasty. In the Qing Dynasty, the yilili, Sujia, Suduli and Sujia people in Manchu Eight Banners were changed to Suhan people. These ethnic minorities have lived with the Han people for a long time and gradually assimilated into the local Han people in the Soviet Union.

Extended data:

Su Fensheng appeared in the Zhou Dynasty when the surname Su spread. He was one of the founding heroes of the Western Zhou Dynasty and was praised by Zhou Gongdan. So he was sealed in the Yellow River valley and lived in his fief. From then on, there was the Sujia family south of the Yellow River and north of the Yellow River.

During the Spring and Autumn Period, the Su family was promoted from Chu to Zhuang Wang, and the Su family settled in the two lakes. During the Warring States Period, the main settlement of the Sioux people was Luoyang, and the strategist Su Qin appeared.

At the beginning of the Han Dynasty, Su moved the capital to Qin. Since then, Su moved the capital to Shaanxi from the north of the Yellow River and Henan. During the reign of Emperor Wu of the Han Dynasty, Su Jian went to the Xiongnu with Wei Qing as a captain in the second year of Yuanshuo. After his death, he was buried in the hometown of martial arts in Judah, Shaanxi Province. From then on, Su Jian became the ancestor of Su's martial arts school. Shortly thereafter, this Su surname was derived from Fufeng Su surname, Wugong Su surname and Lantian Su surname. At the end of the Han Dynasty, a family named Su moved from Hanoi to Meishan, Sichuan.

Baidu Encyclopedia-Su surname