This was one of my few surprises while I visited Beijing December 2009. Just by the title, "wo xing wo su" has a very modern and teenage tone to it. Sure enough, when we got there, the atmosphere was very fitting for a wide range of audience. It didn't have any religious atmosphere to it, rather it was a very chill, cozy, and friendly setting. The food and service there was great, I took my sister and my dad there several times and also recommended my friends to the place as well. There are vegan cakes there!!! ;) What they seem to promote was the environmental aspect of being a vegan, which was lovely for younger generations as they are more accepting to that. Also it is a mixture between a tea shop and a vegan restaurant, so for people who just want to drop by to have a wide range of Chinese tea, this is a good place as well! I thought this was rather a creative idea since people may be attracted in to drink tea but at the same time can be introduced to vegan eatery -- why not, since you're already there :D Very easy to find-- it is at the end of a T-shaped intersection, big green sign.
One of my favorites in Beijing, along with VeganHut, which is in Chaoyang district Soho