An excellent on-line unit database!

[Donny]

Yep. Chinese Wiki was originally constructed by several players in order to help those who like this game but have difficulty understanding English, thus it's basically Chinese. However, there are some contents that both English and Chinese descriptions are available:
magic (a few missing): http://www.letscorp.net/wiki/farm/do...ic/School.html
pretenders (more than half done) : http://www.letscorp.net/wiki/farm/do...nions/God.html
heroes (almost done, not quite sure): http://www.letscorp.net/wiki/farm/do...gory/Hero.html
and the all-units page Epaminondas posted, which is the most under developed area.