Introduction to the Great Wall (50 words)

The Great Wall of Wan Li is one of the great projects in ancient China. It was built in the Spring and Autumn Period and the Warring States Period (770 ~ 476 BC), and the existing one was built in the Ming Dynasty. It starts from Jiayuguan in Gansu in the west and reaches Hushankou on the Yalu River in Dandong, Liaoning in the east, spanning Gansu, Ningxia, Shaanxi, Shanxi, Mongolia, Hebei and Liaoning. Along the way, there are Shanhaiguan, Juyongguan, Niangziguan and other checkpoints. The Great Wall for short. The Great Wall was originally built by Yan, Zhao and other countries in the Warring States Period to defend against the invasion of northern aliens.

: 1 Origin of the name of the Great Wall: The name of the Great Wall began in the Spring and Autumn Period and the Warring States Period. "Historical Records of Chu Family" contains: "Qi Xuanwang rides a mountain to build the Great Wall, east to the sea, and west to Jeju to prepare for Chu."

2. the purpose of building the great wall: in ancient times, we could not completely defeat the nomadic people. In order to strengthen the consolidation of the country, we can only build the Great Wall. When Kublai Khan fought in the Song Dynasty, he directly bypassed the Great Wall and attacked from the west. The Great Wall seems useless, but it is only a few. Building the Great Wall requires manpower, material resources and financial resources, but it has indeed played a huge role in previous wars.

Significance of building the Great Wall: It has been more than 2000 years since it was built. Although it has lost its defensive function, it still stands tall, showing the long history of the Chinese nation, reflecting the great achievements of China's ancient architectural engineering technology, showing the strong perseverance and intelligence of the working people of all ethnic groups in ancient China, and embodying China's strategic thought of active defense formed since ancient times.