Da Xuesheng is not the kind of place you are likely to find on your own. It is located on Dongsi Street, which runs parallel to Wangfujing Street on the east side. You can find it by going to the east end of Oriental Plaza. The furthest east exit of Oriental Plaza brings you out onto Dongsi street. From here turn left and walk north for about 5 minutes. The restaurant is on the left hand side and is easy to walk straight past. The yellow sign you see in the window in the photo is all there is.
This restaurant is a great example of modern traditional Chinese dining. The menu is extensive and the taste is authentic. The cleanliness and hygiene is budget to mid-range, but bear with it or you’ll miss some great, value for money food.