Introduction to the Great Wall: Since ancient times, Gubeikou has been known as "the ground strangles the neck and the river flows back and forth" because of the twin peaks of Panlong Mountain and Wohu Mountain, and the Chaohe and Tanghe rivers passing through the town. The Great Wall was built since the sixth year of Tianbao in the Northern and Southern Dynasties (555), and it has a history of more than 1,000 years. It is the section of the Great Wall of the Ming Dynasty that has the most magnificent natural scenery and the most varied forms of watchtowers and city walls. It is also the strongest and most majestic section of the Great Wall of the Ming Dynasty carefully designed and supervised by Qi Jiguang. It is also the only section of the Great Wall of the Ming Dynasty that has completely preserved the The best part of the Great Wall is in its original appearance, and some of the rare Northern Qi Great Wall and ruins of the ancient Great Wall are preserved.