Jiayuguan Great Walla pass standingthe west section of the Great Wall was constructed during the Ming Dynasty (1368-1644). It was named after one of its surrounding hills, Jiayuthe passes on the Great Wall, Jiayuguan is the most intact surviving ancient military building. The pass is also known by the name as the "First and Greatest Pass Under Heaven"The pass was a key waypoint of the ancient Silk Road. Jiayuguan has a somewhat fearsome reputation because ancient Chinese people who were banished were ordered to leave through Jiayuguanthe west, the vast majority never to return.