In ancient times, people thought it was disrespectful to call others by their first names. They all took names and had characters, but now none of us have this idea. Moreover, in ancient times, it was also spread by those literati at the beginning. Now, people gather casually and prefer to call each other by their names. It sounds very kind, and we don't think there is any respect or disrespect for anything. And later, the names and characters have also been integrated.
Ancient people were very particular about naming names, characters and numbers. Generally speaking, the characters may be more formal, that is, the names between the upper and lower generations are different, that is, people of the same age who are familiar with each other call each other by their first names. They all think that it is disrespectful to call strangers by their first names. So in ancient times, there was a lot of such attention. If the number is like a number, not everyone can play it. This is ok with or without it. I think some literati like to play the number. In ancient times, if the younger generation called their elders by their names, it would be a big violation, and people would condemn him. It can also be seen that the requirements in ancient China are really many, many, but this can't be helped. After all, when people's ideas are very old, they are too strict. Moreover, on the other hand, it was very elegant to choose names and words at that time, which also had a certain relationship with the ancient Chinese poetry culture.
In modern times, people naturally don't want to go to so much trouble. Anyway, it's unnecessary. Isn't a name just a person? It's easy to distinguish. Therefore, almost from the Cultural Revolution, people began to take fewer characters, and their names became one. Moreover, we all have ID cards now, and it is of course not convenient to register if you are famous and have words, so now people no longer take words, and their names are combined into one.