Historical significance of Shuidonggou Tibetan soldier cave and the Great Wall

The cave for hiding soldiers was a place for hiding soldiers, weapons and soldiers in the Ming Dynasty. Its tunnels meander on the cliffs of the 3 km-long Grand Canyon, forming a tunnel network extending in all directions. It is isomorphic with the Great Wall, canyons, gullies and castles. Form a three-dimensional military engineering system with internal and external communication. The cold and cruel caves of Tibetan soldiers also have the function of "peace messenger"

The defense along the Great Wall in the Ming Dynasty was to build a city in 70 miles and a castle in 30 miles, and there was a "city barrier" between the city and the castle. "Hongshan Castle" is the smallest city barrier. It is integrated with the 3-kilometer-long Tibetan soldier cave, setting a tight encirclement for the invading enemy. However, Hongshan Castle has never experienced war. According to historical records, during the Ming Dynasty, although Tatar and Vara troops invaded the Central Plains many times, they all bypassed this indestructible fortress. This is the luck of Hongshan Castle and the Cave of Hidden Soldiers, but it is also unfortunate.

Well-built caves for hiding soldiers seem to hide a truth: defending war is not just for war; Or more thoroughly, this defense is to prevent war. Once the preventive measures are put in place, it is possible to scare off the invading enemy. Since war is a constant theme handed down from generation to generation in human society, how to build and consolidate national defense is also the meaning of the topic.