Introduction to Jiuxiao Biyun Cave: Biyun Cave is located halfway up the mountain. The cave hall covers an area of ​​28,000 square meters. The highest clearance in the cave is 24 meters. The single hall area is so large that it is rare in China. It is known as the "Asia-Pacific No. 1 A big cave hall". The largest stalactite in the cave, "Optimus Jade Pillar", is more than 20 meters high, supporting a piece of "blue sky and white clouds" on the roof of the cave. There are 23 groups of magical and gorgeous scenic stones in the dome-shaped hall, forming a unique cave wonder.