How to write the English name of Bai?

The English name of "Bai" is the same as that of Chinese Pinyin:

White, or white, green (surname is distinguished by comma)

In general English, when you introduce yourself, you use your first name and then your last name.

White or clear (first name written before last name, no comma)

Nowadays, in passport translation, most people will spell the name "Qingqing" together, so the common official translation is:

White, human