Introduction to Jiudao Cave: After passing the Zhenlong Bridge, there is a twists and turns of rocks intertwined and interlocked with each other, called Jiudao Cave. The cave is about 20 meters long and can only accommodate one person crawling through. The meaning of Jiupao Cave is to pass through this hole and fall back and forth, thousands of times. There is also an encouraging poem in it, which is a metaphor for the ups and downs that life has to go through, and you can achieve great things after you overcome them.