Introduction to Feitianjing: The palace gate of Jiulong Cave next to the stream is more than 20 meters deep and 5 to 6 meters wide. It is made up of small holes of different shapes connected to each other. You can lie down along the small holes. Drilling in, the innermost cave is about 100 square meters and more than 30 meters high. In the cave, there are black waterfalls, camel rocks, stars and moon and other beautiful water and stone scenery for you to enjoy.