The hall is in a kiln shape, if it is circled from the front hole. A bird's eye view of the hall, the front hole is more than 100 meters long, and the road is twisted. The mouth of Jiuliandong is like a bucket, the outside is narrow and the inside is wide, forming multiple holes in the hole, hole set cave, pool water piercing, hole in the hole, pool around the hole, wonderful landscape. Really good.