Ethnic food in Pittsburgh is a bit disappointing, but this restaurant is really excellent - provided you choose from the wonderful Szechuan menu and you like spicy food. It's not quite Chinatown in NYC or Anaheim in LA, but it is very good. The hot pots burn (I had the mutton pot last time) and paralyze your tongue as they should and the veggies are very tasty (i had the peppers and the egg plant recently).
Update 02/02/2011
I ate there twice recently, and overall I am pleased with the quality of the food. The egg plant with a garlic sauce is tasty and not spicy - this will be welcome if some around your table are sensitive to spices. The tongue and tripes with spicy vinaigrette - an appetizer - were better than the first time I took the dish: the sauce was denser and less watery. The hot chili peppers were not as spicy as expected, but they were delicious (I have had them twice already - no disappointment there).