Huanglong Cave is located in the Wulingyuan Scenic Area of Zhangjiajie and is one of the world natural heritage sites. It is famous for its huge three-dimensional structure cave space and rich cave landscape, and is known as the "world cave wonder". The calcareous sediments such as stalactites, stalagmites and stone mantles in the cave are of different forms, forming exquisite underground pictures. In particular, the landscapes such as "Dinghai Shenzhen", "Ten Thousand Years Cedar" and "Dragon King Throne" in the cave are even more breathtaking.