change the hidden link

let me ask, is there a hidden link can change into a different language is not

You want to do whats written in the image? Guests can see that message.

not, is that I can change the language of link hidden

If by changing the board language in the admin panel & your profile preferences the language does not change, then i am afraid that you cannot.

I choose the language used by Vietnamese, but it is a hidden link in English is so

Yes, so nothing can be done to avoid it.

So where does this lie in the Templates