The Great Wall was the most important military defense facility in ancient China.

The Great Wall was the most important military defense facility in ancient China. It is a tall, solid and continuous long wall, which is used to limit the enemy's riding action. The Great Wall is not a simple isolated wall, but a defense system with the wall as the main body and a large number of cities, obstacles, pavilions and landmarks.

The history of the construction of the Great Wall can be traced back to the Western Zhou Dynasty, and the famous allusion "bonfire drama princes" occurred in Haojing, the capital (now Xi 'an, Shaanxi) originated from this.

During the Spring and Autumn Period and the Warring States Period, countries competed for hegemony and defended each other, and the construction of the Great Wall entered its first climax, but the construction length at this time was relatively short. After Qin destroyed the six countries and unified the world, Qin Shihuang connected and repaired the Great Wall of the Warring States Period, which was called the Great Wall of Wan Li. The Ming Dynasty was the last dynasty to overhaul the Great Wall, and most of the Great Wall people saw was built at this time.

Importance of influence:

From the Qin and Han Dynasties to the Ming and Qing Dynasties, many passes along the Great Wall became places or centers for ethnic transactions in the two major economic and cultural systems of agriculture and animal husbandry, and some gradually developed into important towns along the Great Wall.

The Great Wall not only ensures the normal development of agricultural economy, culture and animal husbandry economy and culture, but also provides a place and convenience for their exchange and complementarity. It also plays an important role in mediating the two economies and making the agriculture and animal husbandry economy develop in the direction of mutual assistance. Therefore, the Great Wall not only plays the role of isolating the two economies and cultures, but also shoulders the heavy responsibility of closely linking the two economies and cultures.

During the Qin and Han Dynasties, there were nearly ten million soldiers and civilians. While building the Great Wall, Qin Shihuang began to strengthen the development and construction of border areas, which opened the prelude to stationing farmland to defend the border and developing the border areas.

Because it took a long time to build the Great Wall in the Han Dynasty, many people put forward suggestions on immigration, which were adopted and implemented by the Han government. Immigrants and soldiers guarding the Great Wall cultivated wasteland together, which not only accelerated the economic development of the border region, saved a lot of government military expenditure, but also greatly reduced the pain of long-distance transportation and made Chinese culture spread farther and wider.