Is the name "English Zone" suitable? "English Area", "English Corner", "English Board", "English Forum" might all be good. Which one you think the best? Thanks.

Well, that depends on how you look at this section of the forum.
Do you want it to be the place ppl ask for translations or do you want it to be an area every use English for posting?
At the moment I don't think there will be enough ppl willing/capable of using English to post here. So I am inclined to think its an area for users to ask for translation from English to Chinese. I think this is how it is used now.
Taking this into consideration maybe we should call it "translation zone"???