I was on a train to see the Dead Railroad, which was particularly interesting, and the train was very slow at that time, and then the conductor muttered something in Thai, and everyone looked on both sides excitedly. From the left, the cliffs are tens of meters below. From the right, the train is close to the rock wall and almost hit the rock wall. From your current engineering technology, this kind of engineering difficulty is a pediatrics, to think of the World War II Allied soldiers with their hands built a little bit, you can imagine how many lives have been paid. The scenery on both sides of the Gui River at your feet is beautiful and tree-lined. Some high-end resorts are staring at each other.