We ordered hot and sour soup and two bowls of noodles.
I first tried that soup, it tasted really good, ingredients were fresh, not too hot and the thickness was just right. As I was saying how good it tasted... I bit into a small piece of rock! I spit it out and immediately I lost all my appetite, I couldn't tell how the rest of the food tasted like. I was lucky I didn't crack my tooth.
The staff of course apologized and took that soup off our bill as I didn't want another bowl. It was an really awful experience.