Introduction to Taiyi Rock: It is the largest natural stone chamber in Huoshan Mountain. It is about 20 meters deep, 37 meters wide and 5 meters high. It is quiet and pleasant. There was originally a well in the cave, which was bottomless. Legend has it that it was connected to the sea in Shantou, and tsunamis were heard from time to time. There used to be Qinghua Temple inside the rock, and Lingshan Temple was built in front of the rock. Xuanzong of the Tang Dynasty visited here when he was a monk.