Name Line: Yumenguan
Category: Great Wall
Year: Emperor Wu of the Han Dynasty was established and abolished after the Song Dynasty.
Location: Gansu
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Yumenguan Pass is a famous pass in Hexi Corridor in Han Dynasty, which is located on the ancient Silk Road. Founded in the reign of Emperor Wu of the Han Dynasty, it was named after the introduction of western regions and the passing of jade in Khotan. Therefore, it is located in Xiaofangcheng, about 40 kilometers northwest of Dunhuang, Gansu. The existing Yumenguan ancient castle is surrounded by sand, with Beishan in the north and Shule River in the south. There is an alkali lake dozens of meters outside the north wall of the ancient castle, from which the Great Wall of Han Dynasty traverses northwest. The castle in Yumenguan is square, all rammed with loess. The four walls are complete, 24 meters long from east to west, 26 meters wide from north to south and 9.7 meters high. There is a door in the west and a door in the north, with a total area of more than 630 square meters. In the Han Dynasty, it was the governor's office and an important transportation channel for China to the western regions. It has played an extremely important role in China's foreign transportation, culture and economic exchanges. Wang Zhihuan, a poet in the Tang Dynasty, wrote, "Why blame Liu for a strong flute?". Spring breeze is nothing but Yumenguan ",and Li Bai's" a thousand miles of wind blows Yumenguan battlements "makes Yumenguan famous. Today, when you climb the Yumen Pass, you can also see a section of the Great Wall (also known as Sai Han) that defended the Huns in the Han Dynasty. It winds from the east along the Gobi Mountains. Lighthouses built on hillsides, valleys or open fields extend westward. About 20 kilometers east of Yumenguan, Dafangpan was built in Han Dynasty, which was a munitions warehouse for storing grain in the western defense line of China from Han Dynasty to Wei and Jin Dynasties, and was used by officers and men in Yumenguan area. The ancient city is located on a natural earth platform 2 meters above the river bed, which is rectangular and north-south, and is made of rammed earth plates. East-west length 132 meters, north-south width 17 meters, and the highest point of the wreck is 6.7 meters. Three meters inside the Great Wall, just south of Dafangpan City, is the beacon tower of the Han Dynasty, called "Yumen Qian Qiu", which is made of stone and red willow. The height of the site is about 9 meters.