China’s cultural influence. In ancient times, there were Chinese people whose names were just one character. But after such a long time, the culture has accumulated more and more, and naming has become a profound knowledge, representing a kind of blessing and hope. Some people like a simple name with just two words, and some people want a more meaningful name with a longer name.
For example, some parents just want their children to be happy, and #心, #乐, etc. can be expressed with just one word. But some parents hope that their children will have no obstacles when they grow up, so they may call them #Shaofan (meaning, 小: less, very few; Fan: obstacles. When combined, it means very few obstacles).
In short, in Chinese names, except for the surname, every word in the name is meaningful and a blessing. If you taste it carefully, you will find that every Chinese name actually has Chinese culture in it.
The characters in Chinese names may come from poems or articles. The rules for naming may be there invisibly.