In our impression, Qin Shihuang had two sons, one named Fusu and one named Hu Hai, and none of them had his surname, but this is not the case. Among the surnames at that time, the surname and the surname were actually different. If they were called by their names at that time, there would definitely be a "win" in front of them. However, since history books generally use only the two characters after them, we all think that They don't have the surname "Ying".
Nowadays, people have the same surname and surname. For example, "Zhao Qian Sun Li" are all people's surnames, but in ancient times, the surnames were separate and not just one. Just like Ying Zheng, he can actually be called "Zhao Zheng". Because "Ying" is the surname of Qin Shihuang, and "Zhao" is his surname. Generally speaking, surnames represent status and class, while surnames are used to avoid intermarriage. So if we look at the surnames of people in the past according to their current surnames, that is wrong.
But apart from the surname, Qin Shihuang also chose the names of his two sons very randomly. Even now, many of us have to look at a lot of things when naming our children, such as the birth date, the meaning of the name, etc. But of Qin Shihuang's two sons, the eldest son was named Fusu because his mother liked the song "Fusu on the Mountain" very much, so Qin Shihuang named his son after the song. But from this perspective, the name "Fusu" is actually very meaningful and full of ancient style. The second son Hu Hai was named because Hu Hai's mother was a Hu person, and he was born in Haishi, so he was named Hu Hai. It can be said that he was not careless at all.
Qin Shihuang was actually an emperor with great talents and strategies. Although he named his sons very casually, in fact his sons still followed his surname, but their full names were not recorded in history. Later, for the convenience of management, the surnames are now unified, which is much simpler and clearer than before.