I need some information about the Great Wall, 3, 4 rows are enough 10

The main project of the Great Wall is a tall city wall that stretches for thousands of miles, most of which are built at the highest point of the mountain, and along the ridge the winding and endless mountains outline a clear outline, shaping a galloping and majestic dragon, thus becoming a symbol of the Chinese nation. On the city wall, there are hundreds of Xiongguan and passes, thousands of enemy platforms and beacon towers, which break the monotony of the city wall, make the undulating terrain appear more majestic and precipitous, and are full of great artistic charm.

However, according to the research of cultural relics and archaeologists in recent years and the investigation of the ruins, it is initially estimated that the Great Wall is 100,000 miles long. The Great Wall built in successive dynasties has been distributed in 16 provinces, municipalities and autonomous regions from Xinjiang in the west, Heilongjiang in the east, and Hunan in the south. Among them, the total number of Great Walls in the Inner Mongolia Autonomous Region alone is as much as 30,000 miles.

The Great Wall in Hebei Province is also nearly 10,000 miles. There are more than 20 vassal states and dynasties that have built the Great Wall, the Great Wall built by Qin Shi Huang is more than 10,000 li, the Great Wall of the Han Dynasty is 20,000 li, and the Great Wall of the Ming Dynasty is more than 12,700 li.

In addition to the "outer" Great Wall, the Ming Dynasty also built the "Inner Border" Great Wall and the "Inner Three Passes" Great Wall. The Great Wall of "Neiguan" is based on the construction of the Northern Qi Dynasty, starting from the west of the partial pass at the junction of Inner Mongolia and Shanxi, going east through Yanmen Pass and Pingxing Zhuguan into Hebei, and then turning to the northeast, passing through **, Fangshan, Changping Counties, directly reaching Juyong Pass, and then from north to east, to the four customs of Huairou, connecting with the "outside" Great Wall, with Bauhinia Pass as the center, roughly into a north-south direction. The Great Wall of the "Inner Three Passes" runs parallel to the "Inner Border" Great Wall in many places

The Great Wall is a miracle created by the working people of our country in ancient times. Since the Warring States period, the construction of the Great Wall has been a major project. According to records, Qin Shi Huang used nearly a million laborers to build the Great Wall, accounting for 1 20 of the country's population!

At that time, there was no machinery, all labor had to rely on manpower, and the working environment was steep mountains and deep cliffs. It is conceivable that this huge project could not have been completed without the hard work of a large number of people.

纂年体 biān nián tǐ

Interpretation] (name) A genre of traditional Chinese history books, arranging historical facts by year, month, and day. Such as "Information Governance Tongjian" and so on.

Composition] Partial formal: chronicle (body).

Example sentences] history books. (as a final statement).

1. The epochal nature of the construction of the Great Wall.

According to the research of geographers and climatologists, in the Qin and Han dynasties, the rainfall in northern China was much higher than today, and the water and grass were abundant, which was very beneficial to the development of animal husbandry. At that time, the northern nomadic tribe Xiongnu was also extremely strong, known as the "pride of the sky". Qin Shi long with a large number of troops deployed in the north to prevent the invasion of the Xiongnu, the general Meng Tian (legend has it that this person invented the brush) once commanded 300,000 troops on the border.

In the Han Dynasty, it was the ** era of the Xiongnu, and the Xiongnu prince Maodun, who had been a hostage to the Yueshi people, led his troops to break the Yueshi in 177-175 BC and forced the Yueshi to move west. The Yueshi later crossed the Amu Darya River and established the Kushan Empire. Mao Dun also once besieged Han Gaozu for seven days and seven nights, known as the "Siege of Baideng" in history.

Although the Mongol forces in the Central Plains were eliminated during the founding of the Ming Dynasty, in the northwest, Warat once unified Mobei and had a strong power. During the invasion of Warat, even the emperor who was personally conquered was taken prisoner, which is known as the "Tumubao Change". In addition to the Song Dynasty, in fact, in history, only these three dynasties had the most serious border troubles, so they were also particularly enthusiastic about building the Great Wall.

The Great Wall of the Qin Dynasty only connected the original Yanzhao Great Wall; The Great Wall of Han is said to have extended all the way to the Lop Nur region of Xinjiang; The Great Wall of the Ming Dynasty starts from Shanhaiguan in the east to Jiayuguan in the west, and today's Great Wall is the remains of the Great Wall of the Ming Dynasty. According to historical records, the ancient nomads fought extremely cruel wars, and the victors often killed the adult males of the defeated tribes, plundered women and children as slaves, and if the population of the defeated tribes was large enough, there were often no chickens and dogs left in some areas. Genghis Khan's conquest and killing were nothing more than the practice of the nomads.

Changchen is a miracle created by the ancient people of our country.

The Great Wall (greatest wall), also known as the Great Wall, was an ancient Chinese military defense project, a tall, strong and continuous wall used to limit the movement of enemy cavalry. The Great Wall is not a simple isolated city wall, but a defense system with the city wall as the main body and a large number of cities, barriers, pavilions and beacons.

The Great Wall is a miracle created by the working people of our country in ancient times. Since the Qin Dynasty, the construction of the Great Wall has been a major project. According to records, Qin Shi Huang used nearly one million laborers to build the Great Wall, accounting for 1 20 of the country's population, at that time there was no machinery, all labor had to rely on manpower, and the working environment was lofty mountains, cliffs and ravines.

It is conceivable that this monumental project could not have been completed without the hard work of a large number of people.

The resources of the Great Wall are mainly distributed in 15 provinces, autonomous regions and municipalities, including Hebei, Beijing, Tianjin, Shanxi, Shaanxi, Gansu, Inner Mongolia, Heilongjiang, Jilin, Liaoning, Shandong, Henan, Qinghai, Ningxia and Xinjiang.

Among them, Shaanxi Province is the province with the most abundant resources of the Great Wall in China, with a length of 1,838 kilometers. According to the results of the national survey of the Great Wall resources of the Department of Cultural Relics and Surveying and Mapping, the total length of the Great Wall in the Ming Dynasty is 10,000 kilometers, and the Great Wall in the Qin and Han dynasties and early is more than 10,000 kilometers, with a total length of more than 10,000 kilometers.

In some areas, the Great Wall is a cause for concern. The influx of tourists caused obvious damage to the Great Wall. Plastic bags, mineral water bottles, waste paper, fruit peels and other garbage can be found everywhere, and the city walls are graffitied.

Local villagers "rely on the mountains to eat the mountains", and set up ladders at the battlements and on the path leading to the Great Wall, and set up fees for them. Some real estate developers have erected many structures in the reserve that are not in harmony with the Great Wall, accelerating the destruction of the natural landscape around the Great Wall.

According to the historical records of the Ming Dynasty, the Great Wall is about 6,300 kilometers long, so it is called the Great Wall. But the name may lose its relevance in the near future. On September 27, Dong Yaohui, vice president of the China Great Wall Society, said sadly when participating in the Great Wall walking activities of envoys in China in Yulin City, Shaanxi Province, "The survey shows that there are less than 20 parts of the Great Wall of the Ming Dynasty with good walls, less than 30 parts with obvious visible ruins, and the total length of walls and ruins does not exceed 2,500 kilometers."

In some places that are inaccessible and in poor natural conditions, the Great Wall has practically disappeared. ”

The reporter's investigation found that part of the cause of the serious damage to the Great Wall was natural factors. For more than 500 years, due to the invasion and destruction of wind and rain, the brick and stone city walls and enemy towers and other wall buildings that have been in disrepair for a long time have generally had many problems of internal structure change and collapse hidden dangers. In Beijing, Hebei and other well-preserved walls and enemy towers, due to the long-term accumulation of dust and the growth of many plants, the water content of the wall increases, the strength of the wall decreases, and the danger of collapse increases.

Experts believe that the growth of plant roots on the city wall has caused damage to the wall, and the tree roots have reduced the strength of the city wall masonry, and the city wall is very easy to be damaged after it expands and then enters the rainwater. This situation is most prominently reflected in the sections of the Great Wall under the jurisdiction of Hebei, Beijing and Tianjin.

The reporter found that many rammed-earth Great Walls in Shanxi and Shaanxi provinces were fine a few years ago, but now they either have cracks or have seriously collapsed.

In the investigation, the reporter also found that due to the lack of protection awareness and lack of management, the behavior of man-made destruction of the Great Wall has been on the rise in recent years. Man-made damage to the Great Wall mainly includes material damage, constructive damage, tourism damage and restoration damage.

Although the act of vandalism began in the 50s of the last century, the awareness of the protection of the Great Wall has generally been improved in various places, and the large-scale demolition of the Great Wall has basically been controlled. Constructive sabotage and tourist sabotage have gradually developed in recent years, and constructive sabotage has shown an increasing trend. In particular, in the construction of mining and highways, the Great Wall is often cut off or even demolished. The unique cultural and artistic charm of the Great Wall has made it a popular tourist destination for millions of tourists, but the increase in the number of tourists has also brought great pressure to the protection of the Great Wall.

Restorative damage intended to protect or develop the Great Wall is "good intentions do bad things". The reporter saw in Ma Town, Fugu County, Shaanxi Province, that the local villagers raised funds to repair a rammed earth Great Wall pier site during the Chenghua period of the Ming Dynasty, but this new pier platform is partly made of old bricks, and part of it is made of red bricks, which has a strong contrast with the yellow rammed earth platform base at the bottom, and the position and proportion of the battlements and whistle positions on the pier platform are also problematic. Some experts have pointed out that such a simple and crude restoration act is actually another kind of damage to the Great Wall.

The level of protection is not uniform, and the awareness of protection must be strengthened.

Building Structure:

1. A wall. The walls are the main part of the city walls, with an average height of meters, with some sections reaching as high as 14 meters. Where the hills are steep, they are built relatively low, and where they are flat, they are built higher; It is higher in the most important places and lower in the general area.

2. Beacon. The Great Wall system has a large number of beacons (beacons) as an intelligence transmission system, which is the oldest but effective way of transmitting information.

3. Castle. The castle is divided into an acropolis, a garrison or a dry city and a fortress according to the rank, and is arranged on the inner side of the Great Wall according to the requirements of the defense system and military system, and there are those outside the wall.

4. Guancheng. Guancheng is the most concentrated defensive stronghold on the defense line of the Great Wall. The location of the castle was crucial, as it was chosen in a favorable terrain to defend against a powerful invader with minimal force.

Ethnic integration: In terms of culture, the Great Wall has also played an important role in the formation and development of the pluralistic and integrated pattern of the Chinese nation. The construction and defense of the Great Wall, as well as the battles in the Great Wall area, led to the extensive integration of the Han and more than a dozen ethnic minorities in ancient China.

Military significance: The Great Wall is the greatest military defense project in the ancient history of the world, it is not a simple isolated first-line city wall, but from point to line, from line to surface, connecting the passes, military forts, customs and important military towns along the Great Wall into a tight network to form a complete defense system.