What was Cao's surname at the end of Shang Dynasty? What was your surname in the Tang Dynasty?

Cao's surname is Wei, which originated from the royal branch of the Western Zhou Dynasty. It is one of the oldest surnames in China, ranking 26th among hundreds of surnames.

There are many sources of Cao surname in China. At present, it is generally believed that Cao Shi, the surname of Ji, is the most important source, and Cao Duo is also considered as the ancestor of Cao.

According to legend, in order to consolidate the regime of the Zhou Dynasty, Zhou Wuwang made a big enfeoffment, and at the same time named his younger brother Zhen Xuan as Qiu, built as and called Cao Qiu. My hometown is Heze, Dingtao and Cao Xian in Shandong today, and they are all in Tao Qiu (southwest of Dingtao in Shandong today, Cao Zhou in Dingtao in Northern Qi today, and Cao Xian today). In 487 BC, it was destroyed by the Song Dynasty, and the descendants of Zhenduo took the original country name as their surname. Cao Zhenduo is the ancestor of Cao surname.

Therefore, in Shang dynasty, it was originally named Ji, and later generations began to name Cao because of its seal.

As for the Tang Dynasty, it should still be Cao. For example, there were painters Cao Ba, poets Cao Tang and Cao Song in the Tang Dynasty.