The Great Wall of China as some believed originated as a military fortification against intrusion by tribes on the borders during the earlier Zhou Dynasty. In 770-BC-476BC, the ducal states extended the defense work, and built large structures to prevent the attacks from other states. The Great Wall of China was eventually separated during the Qin Dynasty, which preceded the Zhou Dynasty. The Zhao, Qin, and Yan kingdoms were connected to form a defensive system on the northern border of the country of Emperor, Qin Shi Huang. In 214 BC the building of the Great Wall of China was on its way. The Great Wall of China took as long as ten years to build.

The Great Wall of China took hundreds of thousands of laborers working daily beyond human limitations to construct and build. Many persons that did not work were thrown into the foundation trenches starving from hunger and exposure of the earths changing weathers. The Great Wall of China was then called The Longest Cemetery on Earth. Buried beneath its structure were more than 400,000 persons.

The Great Wall was stretched from Linzhao (eastern part of Gansu Province), in the west to Liaodong (Jilin Province) in the east. The Great Wall of China served as both a defense and symbolized the power of the emperor. The Great Wall of China was partly successful in repelling invading Mongol forces more than a century ago.

The Great Wall of China has more than 300 million trees, and its purpose was to serve as a barrier from the dust storms that swept into China from the Gobi Desert and other low-rainfall areas. The Great Wall of China was dubbed This Great Green Wall. During the 50's, the city of Beijing was beset by 10 to 20 dust storms every spring. Visibility was only half a mile for 30 to 90 hours each month. By the 1970's the storms had reduced resulting in greater visibility at less than ten hours per month. The reduction made work easier for the many laborers.

The Great Wall of China towered China's mountains, plunging to the lower valleys, and marching across burning desert plains. Very cold winds coupled with snowstorms, made it very difficult for workers. At the same time raging desert sun and stinging sandstorms oppressed the workers, making their jobs difficult, and often risky.

Today the Great Wall of China is a captivation for tourists around the world.