North Great Wall

　　Commonly known as the Dawukou Great Wall. It is referred to as the “Frontier Northern Gate Border Wall” in the *Jiajing Ningxia Chronicles*. The wall runs east to west and features three beacon tower ruins, one Linshan Fort ruin, and one Beimen Pass ruin. It was built in the tenth year of the Jiajing reign during the Ming Dynasty (1531 AD), upon the suggestion of Qi Zhiying and the petition of Wang Qiong, then the military commander-in-chief and Minister of War of Ningxia Town. The wall stretches from Sand Lake to Zaoshangou at the foot of the Helan Mountains, spanning a total length of thirty-five li. “The entire structure consists of inner city walls, each two zhang in height and thickness. Deep trenches were dug along certain sections, each about one zhang and five chi in depth and width. The walls are equipped with crenellations for cover, and gaps allow soldiers to shoot or observe below.” After hundreds of years of wind and rain erosion, parts of this section of the Great Wall have weathered significantly, with some segments no longer in existence. However, some portions still remain, making it a worthwhile destination for those seeking to explore ancient history.