Introduction to Tianchi Secret Cave: The secret cave is located in the creek canyon next to the mountain road. This cave is artificially made of granite. Not far into the cave, you can find fragments of stone carvings and brick carvings on the cave wall, which may have been left behind when the ancestors rebuilt the secret cave. The passage inside the secret cave is A-shaped. You can’t breathe well if you walk not far inside. According to legend, this is a secret passage for transporting troops. You can go all the way to the other side at the foot of the mountain. For safety reasons, you can only look at it from the entrance of the cave. Look, you can’t explore through caves.