Mount Tai is the most difficult to climb is 18 sets, because it is relatively steep, and there are not many places to rest in the middle, so it is actually very hard to climb up, far away can see the end of the 18 sets of road is the South Tianmen. That is to say, after 18 discs, you can go to the gate of the Heavenly Palace. So there are many people here to rest and take photos. From here, there is a small temple. Looking back, you can see the people climbing 18 discs below. When you climb here, you are not far from Yuhuangding.