Jianmen Pass, experience the difficulty of Shu Road

Entering the Jianmen Pass scenic area, I didn't choose the cableway, nor did I participate in the adventures of Bird Path and Ape Path. Instead, our family strolled along the Shu Road, walking from the north gate towards Jianmen Pass. In the mountains, Dad kept talking to his son about the generals and battles he was fascinated with, and the stories of Shu Road. The cliffs along the way looked as if they were split by a knife. When we reached Jianmen Pass, the child suddenly said, 'No wonder Li Bai once said, 'One man guards the pass, ten thousand cannot open it.' The cliffs along the road narrowed all the way until only the pass was accessible. The child looked at the mountain and asked me, 'Mom, why does the mountain look like it's made up of many small stones, and from a distance, the cliff looks like the cross-section of a cake cut by a knife?' I couldn't find an answer he could understand.