Official site: http://foh.uj.com.tw/
Curse portal: http://www.curse.com/field-of-honor/
To play the new Open beta, you need to download the new client and register a new account.
download the new client from here
and make a new account to FOH with your uj account.
If you don't understand Chinese translate with Google, its very easy. anyways, if a lot of people are interested in playing it (20+), I will make a new full English patch of the game.