An extensive list of Chinese vegetarian food, including a lot of mock meat dishes. Food is healthy and on the whole pretty good -- the curry potatoes and steak is a perennial favourite of mine. The staff are friendly and efficient, but don't speak English. However they do have an (outdated) English menu, and also a partial picture menu.
The lunch/dinner sets are highly recommended -- portions are reasonable, they come with a bowl or rice and a drink or a soup, and are really low priced at 28 HKD. You can also mix-and-match -- try half each of two different sets for the same price.
It's usually quite busy, so you'll probably have to share a table with other customers. But thus far I've never had to wait to be seated.