The Great Wall In China

The Great Wall is an ancient defense project with the longest building time and the largest amount of work in

the world. Since the 7th or 8th century B.C., the Great Wall had been built for more than 2,000 years, and it is mainly distributed in northern and central China, with a total length of more than 5,000 kilometers. Therefore, the Great Wall has a construction history of more than 2,000 years and covers a large area of land. Such a huge project is the only one of its kind in China, and even the whole world. Therefore, it had been listed as one of the seven wonders, including the Roman Coliseum and the Leaning Tower of Pisa from the Middle Ages.