Since ancient times, we all know that Shu Dao is difficult, especially a poem by Li Bai, which pushed it to the highest point. ? Hey, hey, high risk! It's hard to get through the Shu Road, and it's hard to get to the sky. ? Just a few words make people feel the difficulty of Shu Dao from the heart, so how difficult is Shu Dao? What's the difficulty?

First, the Qinling Daba Mountain is insurmountable.

There are Qinling Mountain and Daba Mountain between Shu Road, in which Qinling Mountain is 377 1 m above sea level and Daba Mountain is 2797 m above sea level. In this way, maybe we can't feel the height of these two high mountains. Then the comparison with Songshan Mountain is more intuitive, because the elevation of the famous Songshan Mountain is only 1, 49 1 m, not more than 2000 meters, which shows that the elevation of Qinling Mountain and Daba Mountain is high. It is very difficult to climb these two high mountains.

Second, the trestle is not perfect.

In ancient times, when we watched those suspension bridges on TV dramas, there were often handrails on both sides, at least we could walk slowly with the ropes on both sides. However, the real plank road in ancient times, especially the ancient Shu Road, was not so perfect at all, at least there was no guardrail. With high altitude and no guardrail, we can see how dangerous Shu Road is. Especially where the sword gate is closed, there are high canyons on both sides, and the others are cliffs.

Third, the mountain road is tortuous.

Due to the limitation of topography, the roads of Shu Road are winding, for example, the eighteen bends of mountain road are no exaggeration. You know, even in modern times, an old driver with excellent skills is afraid to drive alone on the mountain road, not to mention that in the era when ancient technology is relatively backward and the plank road is still incomplete, it is even more difficult for transport vehicles to drive. The tortuous road undoubtedly makes people suffer physically and mentally.