Introduction to Tianzi Terrace: Located on the top of the mountain, it is a natural purple-red arc-shaped rooftop, about three meters square. It is said that Kangxi came here and marveled at the beautiful scenery in front of him, so he wrote the four words "Rihe Feng Yang" There is a protrusion on one side of the platform, and there is a steep cliff below, making people afraid to get close. On the other side, people's eyes suddenly open up, as if "you will be at the top and see all the mountains and small mountains at a glance".