Yumenguan and Han Great Wall, how much makes a newcomer have some psychological gaps - many people who have been to say that Yumenguan is a large mound, nothing to mean. But the precipitation of the years and the vicissitudes of history will make your heart yearning. In particular, the tragic and desolate mood of "the spring breeze is not Yumenguan" makes people feel more admired for this ancient and magical peace. The majestic glory of the year, after two thousand years of wind and rain erosion is full of vicissitudes. The Great Wall that Emperor Wu of the Han Dynasty ordered to block the Huns intrusion has long ceased to exist, leaving only one gate. The mottled part of the city gate fell off, and the grass in the gate was dry. Looking into the distance, it is only the vast and desolate Gobi and the full yellow sand. At that time, the Jin Ge Iron Horse, at that time, was a smoldering fire, and now it is gone, leaving only a piece of wreckage, standing alone in the northwest, for people to see and cherish.