Introduction to the Pan Ladder: The Pan Ladder is a passage in the rock connecting the middle cave and the lower cave, with a total length of 105 steps. Due to the refraction and upload of the sound of water rushing down the cave, the sound of wind, and the laughter of tourists, various different sounds can be heard at the turns of each layer of the passage. From top to bottom, they are "golden drum", "wind thunder", "thousands of thousands of people", etc. "Ma" waiting for the door.