The Xia dynasty was initiated by Sichuan, and then the hereditary system was opened. Therefore, the monarch of Xia Dynasty was surnamed Zi.
As we all know, the monarch of Shang Dynasty was Shang Zhouwang, but Di Xin, the emperor of Zhou Wang, was named Zi Shou. So it's also called Zi.
It is not an exaggeration to say that Ji surname is the ancestor of all surnames. The familiar Zhou, Wu and Zheng Wang all evolved from Ji's surname. This surname is not uncommon among hundreds of surnames. There are about 500,000 people with this surname in the country.
Besides, surnames are really rare now. This surname was given to them by Shun. Besides Zi, Shang people also took Yin as their surname. At present, there are not many surnames of Zi, but many surnames of Yin. However, the sub-surnames have also evolved into many surnames, such as Tang, Xiao, Song, Zhong and Lin.
After the end of the Three Emperors and Five Emperors, the Xia, Shang and Zhou Dynasties opened. However, people are still controversial about the Xia Dynasty. It has been 20 19 years now, and no cultural relics of the Xia Dynasty have been unearthed, so the Xia Dynasty may not exist. As for the eight ancient surnames Ji, Jiang, Yi, Yi, Yi, Yi, Yao and Yi. Are biased towards women. I think there was a reproductive worship at that time, so that's why.
Surnames were really rare in those days, and ordinary people were not entitled to have surnames. So, I think it's easy to infer.
In fact, we can look up our surnames online and look at the surname tree, and we will find many interesting things. You will find that many surnames have deep roots and many changes. Not only that, there are surnames whose origins can't be found at all, because they are generally to avoid disasters.
China's surname has a long history, so we must study it when we have the chance and time.