The waitress tried to argue with me about not leaving tip when the food (I ordered hot sour soup + pan fried dumplings) tasted mediocre and the service were done poor. :(
I signaled for one of the waiters that I'm done and is ready for the bill. He just says 'yes' and returns to tending to the table like nothing happened. I then asked him whether he's bringing a machine to me or am I coming up to the counters.. and he just says 'yes' again LOL. I find it funny how the other waitress argued with me about leaving a tip.