The so-called strange slope is only a section of several tens of meters long, and it is not easy to see the gradient of the soil pavement. People don't feel anything when they walk on it. If they change their bicycle, they can experience the word "strange" a little bit. If they don't need to pedal from one end to the other, the bicycle will go forward by itself, but not vice versa. But the problem is that the slope is really not obvious, so the word "strange" personally feels that it needs to be verified. What kind of rock museum is there in the scenic area? It's just a few projections and a few rooms built with some physical knowledge.