How do foreigners get their names?

Foreigners (western whites) have their surnames first and their surnames last. John Smith is a surname, and everyone has his own name, John. But I just met Smith. If you think you are a friend, you can call him by his first name, which also cares that he accepts you. If he asks you to call him Smith, it means he doesn't know you well, or keeps his distance or something.

As for the name, there are several directions. For example, if you are religious, ask the priest. If you have a father, your father's relatives can also take care of you.

For example, a father can also help his son find his father's name, and his son adds an English word Jr after his name. Jr is a junior in Britain.

Western emperors used the same name. They are called Hu Yi, Hu Yi and Hu Yi.

Names are often named after saints or celebrities in the Bible.

thank you