The ticket staff had a very bad attitude. We tried...

The ticket staff had a very bad attitude. We tried to think that how much we should pay because we supposed to stay only one hour, but she said "how much you pay?" with intimidation. About inside of this museum, on the 4th floor, there are dinosaurs' exhibition. They were great and beautiful. But the 1st floor, the floor was very dirty with cardboard. I could not understand why there was so dirty, and they spent their money for what. I did not want to come again.