Introduction to the watchtower: Climb up to the four-story fireproof watchtower and look north to see the sky filled with yellow sand in the Horqin Desert. When the autumn wind blows, the sand billows, which is breathtaking. From a bird's eye view of the surroundings, the green trees, the green sea and the yellow sand compete with each other. When you climb up to the tower, you will feel deep thoughts about ancient times, marvel at the power of man, and be amazed. Wonders of the world.