Sean is a very popular first name for men (#94 out of 1220, Top 8%) and also a very popular surname for both adults and children (#31492 out of 150436, Top 21%). (2000 U.S. Census).
Follow Us: Membership. The Great Wall of China is a barrier fortification in northern China running west-to-east 13,171 miles (21,196 km) from the Jiayuguan Pass (in the west) to the Hushan Mountains in Liaoning Province in the east, ending at the Bohai Gulf.
Qin Dynasty Great Wall. The Great Wall of the Qin Dynasty (221BC-207 BC) was built during the reign of Emperor Qin Shi Huang, along the country's northern border to prevent the invasion of Huns. In 221BC, Emperor Qin Shi Huang unified China for the first time after annexing six states.