Changbai Mountain in autumn is really beautiful. The scenery along the car is more beautiful than the top of the mountain, but it is a pity that you can't park and look at it carefully. Tianchi is very blue and the water surface is only slightly sloppy. Although the off-season, there are still many passengers. A little altitude sickness, it is recommended that you pay attention to sun protection when you go up the mountain, and the top of the mountain is very ultraviolet. It is worth going around Changbai Mountain Waterfall! The scenery along the west slope is more original, and there are more hiking routes, and the area of Tianchi looks larger. There are also many fewer tourists