This place, along with the other vegetarian restaurant near Tsinghua University, was one of the best vegetarian restaurants I've even eaten at. The food was wonderful, the menu diverse, and everything was well prepared. Like almost all restaurants in Beijing, the menu had both pictures and English so it was easy to choose.
The best dish I had there was a vegetarian fish cooked in a large tray and brought to the table. I didn't write down the name, unfortunately. I was truly amazed by how they were able to replicate the texture of fish, including the skin.
The restaurant is a little tricky to find. It is in the back of a large building which (in 2014) contained many restaurants including a club and a Pizza Hut (forgive me, the logo is easily recognizable to Americans). There is a green unlit sign with both Chinese and English that points the way, but you need to look for it.
Cons: Hard to find