Yanxiuchaoyin is a natural coastal cave on the southern coast of Dongyin Island. An enclosed area on four sides, it only connects to the sea at the bottom, through a crack. Water rushes in along with tidal waves daily, making huge sounds as the waves hit the rocks here.
There is a pavilion and a round-the-cave hiking trail. You may choose to enter from the left and leave on the right, or vice versa for a cave tour. At the vantage point here, you may appreciate the surrounding formations such as cliffs, bays, capes, and caves.