Prompt: Inside the cave, there is a pedestrian path in the middle. There are many lotus lanterns on the water surface on both sides of the path. The lights on the path and surrounding areas are dim. Three wide water curtains flow down from the top of the cave on both sides of the path. The main light is colorful lights projected on the top of the cave. There are three water curtain waterfalls flowing down, the cave is deep and vertical, and the entrance of the cave can be vaguely seen in the distance.