Never had a terrible meal. Met owner once and always chatted with the waitstaff. Always friendly. I've only ever ordered from their Ningxia/Xi'an related Chinese menu.
The lamb soup with pancake is my "go to" dish - so far always delicious.
They also serve Chinese style brunch on weekends. I can't vouch for the level of authenticity (on says it's very on point, one says it isn't very authentic... just depends on who you talk to), but it is a great addition to the growing authentic-style Chinese food scene in Pittsburgh.