"The bright moon in the Qin Dynasty and the pass in the Han Dynasty, the people have not returned from the long march of thousands of miles". For thousands of years, countless soldiers and literati have written about the majesty and desolation of the Great Wall. Standing at the foot of the Great Wall, the mottled walls eroded by the sun, the moon and the wind, the towering and isolated beacon towers, the quietness contains depth and calmness, the mottled highlights the heaviness and magic, all of which leave unforgettable marks in people's hearts. In Shandan County, Zhangye City, Gansu Province, the Han and Ming Great Walls are intermittently winding for nearly 365 kilometers, including the trench-style Han Great Wall and the earth-built and rammed Ming Great Wall. The two Great Walls start from Yongchang County, winding parallel to each other, all the way west, and disappear in the vast yellow sand Gobi of Yumen Pass. Today we walk into the Great Wall, touch history, and feel the oriental dragon that has protected us for thousands of years.