Introduction to the Strange Slope of Changbai Mountain: On the tourist road from Tihe River to Tianchi on the west slope of Changbai Mountain, at milepost 17-18, there is a slope with a total length of about 1,500 meters, which is the Strange Slope of Changbai Mountain. On a strange slope, the car can automatically go up the slope without refueling, and the same is true when testing with cans. At the same time, there is also a strange slope near the underground forest in the northern scenic area of ​​Changbai Mountain. It is quite interesting as a tourist activity and a place to popularize scientific knowledge.