The Yumen Pass
The Yumen Pass, located in the first time Emperor Wudi of the Han Dynasty opened the Western Regions Road, set up four counties in Hexi, because the Western Regions to import jade through this so named. Han Dynasty for the gateway to the Western Regions, the site in today's northwest of Gansu Dunhuang small square plate city. One said it was between Dunhuang in Gansu Province in the northwest and the Xinjiang Uygur Autonomous Region in the southeast. The Great Wall between Jiuquan and Yumen was built in the middle of Yuan Ding or Yuan Feng (116-105 BC), and then Yumen Pass was established. According to "Geography Chronicles of the Han Dynasty", Yumen Pass and Yangguan, another important pass, were both located at the border of Longle County, Dunhuang County. They were both the dominions of the commander and the important places to camp troops. At that time, the transportation between the Central Plains and the Western Regions was always through two passes, which used to be an important military pass and the Silk Road transportation artery in the Han Dynasty. When he was old and thinking of returning home, Han Ban Chao wrote, "I do not want to go to Jiuquan County, but I wish to be born in Yumen Pass." On June 22, 2014, held in doha, Qatar, the 38th UNESCO world heritage committee meeting, yumenguan sites in China, kazakhstan and kyrgyzstan joint support of "the silk road: changan - tianshan corridor network" of a site successfully listed in the "world heritage list".