The Chinese name is Guo Ruyi. What English name should I take?

Hello, Guo Ruyi translated into English name. The usual practice is to spell your name with the full name:

According to English custom, Ruyi Guo puts his name before his surname. If he has an English name, suggestions:

Roy, (pronunciation: Roy, homophonic with Ruyi, the key is to listen well and remember well), meaning of English name: king, first.

This meaning suits you very well.