now as i have changed my mind a little from your posts, to be verified that Wang Youtian is just a good one?...

Woutian, there's no question about it your name is a great one, why change it for some boring old English one? After all, your language and your culture are both older than English, so you have seniority. I am sure that getting used to having people use your names in inverted order, Youtian Wang instead of Wang Youtian, will be enough of an accommodation on your part. I say this as one who is neither learned nor a Yankee.