Why is the Great Wall so long, why is the Great Wall so long?

Because it has been built by many dynasties. In fact, at present, the research on the Great Wall in China is still very limited, and its actual length has not been specifically clarified. Therefore, China is now conducting a survey of the resources of the Great Wall, and plans to check the relevant data of the Great Wall before 2008 and the data of the Great Wall of the whole country before 2010.

Data will be released in due course. "It is said that the Great Wall of China, one-third is intact, one-third is broken, and one-third is annihilated. In fact, it is still unclear how long the Great Wall is and how long it still exists.

Yesterday, China's first large-scale professional chronicle of the Great Wall "Chronicles of the Great Wall of China" was officially launched, and the China Great Wall Association and Phoenix Publishing and Media Group joined hands in this large-scale publishing project. According to Dong Yaohui, executive vice president of the China Great Wall Society, the reason for the launch of this book is that the current situation of the protection of the Great Wall in China is not optimistic, and even the "family background" of the Great Wall has not been figured out. Dong Yaohui, executive vice president of the China Great Wall Society, said

There are very few research results on the Great Wall in China, and they cannot even meet the needs of the Great Wall propaganda. He gave this reporter an example: "When Clinton and Bush came to China, I accompanied them to the Great Wall, and they all asked how long the Great Wall was, but no one could say clearly.

No one can tell exactly how long it is, I can only tell them that the historical record of the Great Wall in the Ming Dynasty is more than 1,700 miles. But in fact, there is a discrepancy between the historical record and the real situation. "The Great Wall of Beijing, the historical record is more than 200 kilometers, some say more than 300 kilometers.

But in fact, after conducting aerial surveys of the Great Wall in 1984 and 1985, the test conclusion was 629 kilometers, which is twice as much as the traditional theory. In 1984 and 1985, two other colleagues and I spent 508 days walking the entire Ming Dynasty Great Wall. After that trekking, Dong Yaohui and his colleagues suggested that the Great Wall of the Ming Dynasty needed to be protected.

There are also walls that stand, that is, whether they are broken or not, they still look like a wall, less than one-third; Less than one-third of the obvious relics remained, such as a stone beam and an earthen ridge; Others, there is no trace of them. However, this conclusion reached on foot more than 20 years ago has not been replaced by a scientific and quantitative judgment. "The country also doesn't have an accurate statement about what our Great Wall looks like. ”

The Great Wall used to be used to defend against the invasion of other ethnic groups, and it had to play a defensive role, so it was generally relatively long.

Over the years, different countries have built bit by bit, coupled with the efforts of Qin Shi Huang, to have today's Great Wall!

1. It has a long history.

The Great Wall of Qin was built in the 3rd century BC and has a long history, with a history of more than 2,300 years. If you go back to the Great Wall of the Western weekend and the Spring and Autumn Period and the Warring States Period, the Great Wall of China is at least 2,700 years old. Even the Great Wall built in the Ming Dynasty is more than 600 years old.

Such an ancient great building is still well preserved to this day, which is very rare, precious and rare in the world.

2. The length is amazing.

From the Spring and Autumn Period to the Ming Dynasty, the Great Wall was maintained and built to varying degrees. The Great Wall is located in the Yellow River, the Yangtze River basin of 16 provinces, municipalities and autonomous regions. It has east-west and north-south directions, with a total length of 108,000 miles (54,000 km).

Among them, thousands of miles away, there are the Great Wall of Qin, the Great Wall of Han and the Ming Dynasty.

3. The project is huge.

According to the rough calculations of scientists, if a wall of 1 meter wide and 5 meters high is built from the earth, bricks and stones of the Great Wall of the Ming Dynasty, it can go around the earth; If it is used for laying meters of thickness and width of 5 meters. This path can circle the earth up to three times.

4. The construction is exquisite.

The land on which the Great Wall was built, or the deep valleys of mountains, rivers and lakes, desert grasslands, etc., were extremely complex and dangerous, and the construction work was particularly difficult. To build the Great Wall, it is necessary to understand and apply various scientific and technical knowledge, such as mathematics, mechanics, geometry, surveying, geology, construction, organization and transportation.

Hello, the Great Wall is a military project built in ancient times to resist foreign intrusion. Later, it gradually became a landscape. In the face of the majesty of the Great Wall, Chinese and foreign tourists all admire the great wisdom of our ancestors.

In my opinion, the Great Wall is called a wonder of the world, not only because it is the crystallization of the wisdom of our ancestors, but also because it reflects the greatness of the Chinese nation as a world wonder and a world cultural heritage.