Introduction to Qingyin Cave: Qingyin Cave is located in the middle of the Big Buddha Rock. The entrance of the cave is engraved with the three characters "Qingyin Cave". It is a natural rock cave. There is a stone crevice in the cave, about 10 cm wide and more than 20 meters long, which leads directly to On the top of the rock, sunlight shines into the cracks in the rocks, which is a veritable "line of sky". This cave leads directly to the bottom of the rock, and the sound transmission at both ends is clearly distinguishable, so it is called "Qingyin Cave".