Maoshan has been known as the "first blessed land, the eighth hole" since ancient times, and this "eighth hole" originated from Huayang Cave. Dongtian, a Taoist noun, refers to the place of "passing", the monks in the hole to cultivate, and the immortals, and the heavens. There are three big words Huayang Cave inscribed above the mouth of Huayang Cave, each word about 1 meter square. According to legend, it is the book of Su Dongpo, a great calligrapher in the Song Dynasty. Now you can only look at the mouth of the cave. It is said that Huayang Cave is only developed to about 150 meters. It is unknown what is in it.