Introduction to Shimen Gorge: The clear stream flowing out from the belly of Ailao Mountain passes through a rocky canyon with a "line of sky" terrain of nearly 1 kilometer. The stream is crystal clear, surrounded by dense forests, and it is endless green. It makes people feel relaxed and happy! The small bamboo raft is a very interesting scene in Shimen Gorge. Sitting on the small bamboo raft, looking at the green mountains and clear spring water, breathing the moist and fresh air, it feels like you are in a fairyland.