Qixingyan is located in Guilin City, Guangxi, Sui and Tang Dynasty called Qixia Cave, Song Dynasty called Xianliyan, Bixuyan, located in Guilin Qixing Park, Putuo Mountain abdominal, east-west through, the entrance is in the southwest half of Tianzhu Peak, the exit is in Dongguan. It was originally an ancient underground river 1 million years ago. The hole is divided into 3 layers: the upper layer is higher than the middle layer 8~ 12 meters, and the residual traces are still identifiable; the lower layer is 10~ 15 meters away from the middle layer, which is still developing underground river; it is now for sightseeing in the middle layer. The middle layer is 1100 meters long (814 meters of tour) and the highest is 27 meters, the widest is 50 meters, and the narrowest is only for single people to pass through. The area is 1.75 hectares. The whole hole forms a beaded underground promenade.