When it comes to ancient tunnels, we have to mention the ancient wars in Liao and Song Dynasties. It is about 65 kilometers long from east to west and 25 kilometers wide from north to south, covering an area of about 1.300 square kilometers. The expert saw its real content and said:? Wan Li Great Wall and Zhanlu, two wonders on the horizon! ? It is not difficult to know what a great monument it is, which can be compared with the Great Wall of Wan Li. At present, it is found that it spans Xiongxian, Bazhou, Wen 'an, Yongqing, Gu 'an and other cities and counties, and Yongqing County alone has 300 square kilometers.
From 65438 to 0989, more than 20 archaeologists and historians came to Yongqing County, where they analyzed and discussed the nature, construction purpose and excavation and construction time of ancient tunnels. It is also agreed that the ancient tunnel in Yongqing is not a simple hidden cave, and it is not made by ordinary people. Its nature is a large-scale permanent underground military project carefully planned by ancient soldiers and civilians and built under the leadership of a unified organization, and it is also a supporting project for border defense against the enemy. For the purpose of building an ancient battle array, everyone has also formed a unanimous opinion: in order to resist the invasion of the Liao army. It was built by the Song government to resist the military-civilian unity organized by the Liao army, not the Liao army. Because the Liao army is dominated by cavalry and mobile warfare, there is no need to build tunnels.
According to the structure, direction and unearthed artifacts of the tunnel, it is preliminarily determined that the tunnel has three military purposes: one is to hide and transport troops, the other is to transmit information quickly, and the third is to monitor the enemy's situation by using acoustic principles. As evidence, glazed pots, projectiles and iron trowels have been unearthed in ancient tunnels. The Song-Liao ancient war in Yongqing County involved 6 towns, 1 1 village street, with a distribution area of more than 300 square kilometers. At that time, the two armies were separated by dozens of miles, and there was no condition to conceal underground fortifications. Song Jun built a new village by building a tile house on the ground with great fanfare, and at the same time built a war road underground. In less than half a year, he saw a tile-roofed house far away. In fact, there are thousands of elite soldiers inside. During the Song and Liao Wars, Guzhan Road was a transportation hub connecting the ancient battlefield in front and the rear area of Song Jun.
Through this tunnel, I guess the tunnel warfare used by the Red Army is also imitating the ancient tactics of the Song Dynasty. Because their structures are very similar, they all have long and charming caves, confusing lanes, flippers, gates and other military facilities.