HI y'all--
China tea isn't *my* cup of tea, but I know some of you are very interested in details relating to China tea...
Here is an article by a linguist of Chinese language about what the "right" characters are to write "Gongfu tea." It is a very rich and nicely documented discussion. It is also quite recently posted.
Even if you decide you have gotten too much info in the main article itself, I'd suggest you go read the comments-- the comments on the languagelog site are always informed and substantial.
jhholland geneva, ny