Xigou great wall photography

According to historical documents, the Great Wall was built over 5,000 kilometers in three dynasties: First, the Great Wall of Wan Li, which started from Lintao in the west and went to Liaodong in the east, was built by Qin Shihuang; 2. The Great Wall of Wan Li, which starts from Hexi Corridor in the west and ends in Liaodong in the east, was built in the Han Dynasty, with a length of 10000 kilometers. These Great Wall sites are located in Beijing, Gansu, Ningxia, Shaanxi, Shanxi, Inner Mongolia, Hebei, Xinjiang, Tianjin, Liaoning, Heilongjiang, Hubei, Hunan, Shandong and other provinces, cities and autonomous regions/kloc-0.

Due to the long history, most of the Great Wall in the early dynasties was incomplete, and the Great Wall built in the Ming Dynasty was well preserved. Therefore, people generally indicate the Great Wall, and the so-called length of the Great Wall also indicates the length of the Great Wall, starting from Jiayuguan in the west and Yalu River in the east.

National Cultural Heritage Administration and State Bureau of Surveying and Mapping April 6, 2009 5438+08.

The Great Wall of Chinese Painting —— Tan Yijing's Works (6)

According to the announcement, the Ming Great Wall starts from Hushan, Liaoning Province in the east and ends at Jiayuguan, Gansu Province in the west, and passes through Liaoning, Hebei, Tianjin, Beijing, Shanxi, Inner Mongolia, Shaanxi, Ningxia, Gansu and Qinghai provinces 156 counties from east to west, with a total length of 885 1.8km ... It passes through a trench of 359.7km, with a natural natural natural natural barrier of 2233.

National Cultural Heritage Administration 20/kloc-0 was announced at the Juyongguan Great Wall in Beijing on June 5th, February. After nearly five years' investigation, the total length of the Great Wall in China was 21196.18km, which was distributed in Beijing, Tianjin, Hebei, Shanxi, Inner Mongolia, Liaoning, Jilin, Heilongjiang and Shandong. This is the first time that China has scientifically and systematically measured the total length of the Great Wall. In 2009, National Cultural Heritage Administration released the survey data of the Ming Great Wall for the first time. The total length of the Ming Great Wall in China is 88,565,438+0.8km. This investigation and appraisal of the Great Wall not only identified the length of the Ming Great Wall, but also carried out the investigation of the resources of the Great Wall in Qin and Han Dynasties and other periods. [ 1]

Construction method

The other side of the Great Wall-Stone Great Wall Scienc Spot (Dajingmen)

In the long history of China, many feudal dynasties built the Great Wall many times in order to consolidate their rule. Thousands of working people in ancient Qian Qian contributed their wisdom and blood, making it a miracle of the world. Whether it is a dragon-like city wall, or a production process and a more scientific brick burning workshop. Therefore, the output of brick products has greatly increased, and bricks are no longer precious building materials, so the inner and outer eaves of many places in the Great Wall of Ming Dynasty are built with giant bricks. Under the condition of manual construction and manual handling of building materials at that time, it was not only convenient to build the city wall with bricks with small weight and the same size, but also improved the construction rate and level. Secondly, the gates of many passes are long-span arches made of blue bricks. Some of these blue bricks have been severely weathered, but the whole gate is still magnificent, showing the superb skills of building arches at that time. Judging from the architectural decoration of the Guanta Tower, many stone carvings and brick carvings are extremely complicated and elaborate, reflecting the artistic talent of craftsmen at that time.

The city wall is the main part of the city wall, with an average height of 7.8 meters, and some sections are as high as 14 meters. Where the hillside is steep, buildings are relatively low.

Wan Li Great Wall (12 sheets)

Flat places are built higher; The key places are higher, and the general places are lower. The wall body is the main part of defending the enemy, with a relatively wide total thickness, a foundation width of 6.5 meters and an average floor width of 5.8 meters on the wall, so as to ensure that the two wagons run in parallel. The wall is composed of an outer eave wall and an inner eave wall, filled with soil and gravel. The cornice wall refers to the side of the skin wall facing the city. There are obvious points when building, which are generally 125% of the wall height. The separation of the wall can increase the width of the lower part of the wall, enhance the stability of the wall, strengthen its defensive performance, and make the outer wall magnificent. The inner cornice wall refers to the inner side of the outer skin wall, which is generally constructed as a vertical wall without obvious points. As for the thickness of the outer cornice wall, it is generally based on the wall thickness at the "crib". The thickness here is generally one and a half bricks wide, and it gets thicker as it goes down. Bricklaying method is mainly flat masonry.

The structural content of the wall depends on the local climate conditions. Generally speaking, the Wan Li Great Wall has the following construction methods:

1. version of rammed earth wall;

2. Adobe masonry wall;

Step 3: blue bricks

The Great Wall (20 pieces)

Build a wall;

4. Masonry wall;

5. Mixed masonry;

6. long stone;

7. Clay connecting brick.

Bricks, stones and masonry are used to build city walls. When the slope of the terrain is small, bricklaying or masonry is parallel to the terrain, and when the local potential slope is large, the wall is built by horizontal descent method.

Beacon and smoke

There are a large number of beacon towers as information transmission systems in the Great Wall system. In ancient times, the high platform used to light fireworks and transmit important news was an important military defense facility in ancient times, and it was the oldest but effective local telegraph. This beacon tower was built to prevent the enemy from invading. In case of enemy situation, the beacon tower smokes during the day and ignites at night, and the beacon tower is connected with the platform to transmit messages. According to historical documents, unearthed Han bamboo slips and field visits, there are a large number of beacon towers here, which extend far away from the Great Wall. According to the location and function of beacon towers, it can be divided into four groups: beacon towers located in the depths of the desert are the forefront of warning, and beacon towers set along both sides of the Great Wall transmit information along the route. A series of beacon towers from the Great Wall to the capital contacted the central government of the dynasty, and a number of beacon towers contacted local governments and garrison troops near the location of the Great Wall. According to the system of the Ming Dynasty, give a cigarette and fire a gun, which means that the enemy is about 100 people. Put two smoke bombs and two cannons to attack about 500 people; /kloc-more than 0/000 people held three cigarettes and fired three shots. Along the 50-kilometer Great Wall, more than 80 beacon towers were found, with an average distance of about 3 kilometers and the farthest distance of no more than 5 kilometers. "bonfire", two signals of ancient frontier warning, is called "bonfire" when smoking during the day and "flint" when making a fire at night.

Beacon towers were built earlier than the Great Wall, but since the appearance of the Great Wall, beacon towers along the Great Wall have been closely integrated with the Great Wall and become an important part of the Great Wall defense system, and some of them were even built on the Great Wall, especially in the Han Dynasty. The imperial court attached great importance to the construction of beacon towers. Beacon, also known as bonfire, is a measure of ancient military intelligence warning, that is, when the enemy invades during the day, it burns smoke (bonfire), and when it invades at night, it ignites (bonfire) to alert all parties and superiors with visible smoke and lights. In Han Dynasty, beacon towers were called beacon towers and pavilions. In Tang and Song Dynasties, the word "beacon tower" was also extended to beacon towers. In the Ming dynasty, it was generally called a smoke pier or pier (the pier in the northwest of the Ming dynasty had the function of defending the enemy, and the small one only had the function of watching the enemy, not lighting a bonfire). Beacon towers are generally about 10 Li apart, and in the Ming Dynasty, the distance was about 5 Li. When soldiers guarding Taiwan discovered the enemy's attack, they immediately lit a bonfire on the stage, and neighboring Taiwan followed suit after seeing it, so as to quickly convey the enemy's situation to the military central department.

Geological form

"Because of the terrain, this plug is very dangerous." This is an important experience in building the Great Wall, which was affirmed by Qin Shihuang and later written by Sima Qian.

the Great Wall

In historical records, the Great Wall was built in accordance with this principle in every subsequent dynasty. All the passes in Guancheng are built between two high mountains and canyons, or at the bend of a river, or where they will pass through the plain, which can not only control the danger, but also save manpower and material resources, and achieve the effect of "one person guards it, and ten thousand people can't force it". Building castles or beacon towers in dangerous places is also an option. As for building city walls, we should make full use of the terrain. For example, Juyongguan, Badaling and other Great Walls are all built along the back of the mountain. Some sections are steep from the outside of the city wall, but very gentle inside, which has the effect of "easy to defend but difficult to attack". In Liaoning Province, the Great Wall in Liaodong Town in the Ming Dynasty had a kind of dangerous mountain wall and split mountain wall, which used steep cliffs to split the cliff slightly and became the Great Wall. Some places completely use cliffs, rivers and lakes as natural barriers, which can be said to be wonderful. As a great project, the Great Wall has become a precious heritage of the Chinese nation.

On June 25th, 20001year, the Great Wall, as an ancient building from the Spring and Autumn Period to the Ming Dynasty, was listed in the fifth batch of national key cultural relics protection units with the approval of the State Council, and it was a national 5A-level building.

major path

Badaling great wall

Great Wall Pass, Jiayuguan Pass, Shanhaiguan Pass, Juyongguan Pass, Yumenguan Pass, Jingxingguan Pass, Niangziguan Pass, Yanmenguan Pass, Piantouguan Pass, Pingxingguan Pass, Gubeikou Pass, xifengkou Pass, Yulin Pass, Huangyaguan Pass, Waqiaoguan Pass, Hushan Great Wall, Wuyaguan Pass, Niuzhuang City, fenshuiguan, Ningyuan City, Yangguan and Niuzhuang City. Dushikou, Zhangjiakou, Mashikou, Yangfangbaoguan, Shuikouguan, Zijingguan, Xuanhua City, Santunying, Sandaoguan, damao mountain, Yiyuankou, Jielingkou, Chongyukou, Xuliukou, Lengkouguan, Baiyangyuguan, Qingshan Pass, tiemenguan, Panjiakou, Longjingguan, Hongshankou, Shangguan and Changyukou. Lupiguan, Hefanggou, Lianhuachiguan, Huanghua Chengguan, Qiaodaokou, Jiukonglou, Sihai Estuary, Juyansai Old Town, Gill Sai, Gaoquesai, Datong, Shahukou, Weilubaokou, Jinsuo Pass, Huangzeguan, Huangyuguan, Beiloukou, Ning Wuguan, Liminbaokou, Shengshengkou, Zhenhongbaokou, Pingping. Refuse to be a wall fort, refuse to be a door fort, Fuma Fort, Broken Road Fort, Security Fort, Luning Fort, Broken Tiger Fort, Residual Tiger Fort, Ma Bao Fort, Marble Fort, Shaojia Fort, Dahe Fort, Defeated Tiger Fort, Ying 'en Fort, Blocked Tiger Fort, General Huibao, Yajiao Mountain, Laoying Fort, Hongmenkou Fort and Tiger Fort.

Existing website

Badaling great wall

Badaling Great Wall (17)

196 1 year, the State Council designated Badaling Guancheng and its city wall as national key cultural relics protection units. 1984, under the initiative of Comrade Deng Xiaoping, "Love my China and build my Great Wall", the ancient Xiongguan was completely renewed. 19 towers were successively restored, with a total length of 374 1 m, making the total sightseeing area reach19000m2. 1986, Badaling was rated as one of the sixteen scenic spots in new Beijing. From 65438 to 0987, the United Nations accepted the Great Wall of Wan Li as a "World Cultural Heritage". 1991August, Badaling, as the essence of the Great Wall of Wan Li, accepted the certificate of human cultural heritage issued by UNESCO at the Palace Museum in Beijing. 19911February, at the naming conference of the top 40 tourist attractions in China held in Zhuhai (there were 94 national candidate scenic spots, and 480,000 valid votes were collected), Badaling became the top 40 tourist attractions in China because of its famous scenic spots, with an absolute majority of 370,000 votes.

Located in Yanqing, Beijing, Badaling Great Wall is the most representative section of Juyongguan outpost in Ming Dynasty, with an altitude of10/5 meters. It has always been a battleground for military strategists, an important military pass in the Ming Dynasty and an important barrier to the capital Beijing. Climb the Great Wall here and enjoy the magnificent mountain scenery. So far, more than 300 celebrities, including Obama, Nixon and Margaret Thatcher, have visited here. Badaling Scenic Area is famous for its magnificent landscape, perfect facilities and profound cultural and historical connotations. Known as one of the nine blockades in the world, it is the essence of the Great Wall of Wan Li and unique among the Great Wall of Ming Dynasty. Badaling Great Wall Museum is a comprehensive museum with the theme of Wan Li Great Wall, which comprehensively reflects the history, politics, military affairs, economy and culture of the Great Wall. China Great Wall Museum is located outside Badaling Pass and opened on 1994. There are 9 exhibition halls in the whole museum, covering an area of more than 3,000 square meters. There are many themes on display, among which "The Great Wall of Past Dynasties" shows the basic context of the emergence and development of the Great Wall; Ming Great Wall and Building Military Equipment show the reason and process of building the Great Wall in Ming Dynasty, the setting and distribution of military towns, the architectural structure and layout of the Great Wall and the equipment of weapons defense facilities. Economic and Cultural Exchange reproduces the historical facts of long-term common development, mutual exchange and integration of all ethnic groups inside and outside the Great Wall. The "national art treasure house" shows that the Great Wall of Wan Li is the crystallization of thousands of years of traditional culture and art in China. "Love my China, repair my Great Wall" reflects the country's concern and protection of the Great Wall.

Mutianyu section of the Great Wall

Mutianyu Great Wall [2], located in Huairou District, is one of Beijing 16 new scenic spots. Juyongguan Great Wall in the west and Gubeikou in the east. The open 2250-meter section of the Great Wall is characterized by cribs on both sides of the Great Wall, especially the juxtaposition of three enemy towers in the viewing platform, the famous Great Wall landscape arrow buckle,

Mutianyu Great Wall (6 sheets)

The horns at the western end of Mutianyu Great Wall and the inverted eagle are the essence of Wan Li Great Wall. Mutianyu Great Wall is a mountainous area with a vegetation coverage rate of over 90%. Mutianyu Great Wall is equipped with domestic first-class cable cars, and projects such as China Dream Stone Town and Shibeide Slide have been developed, forming an organic combination of Great Wall culture, stone culture, sports, fitness and entertainment. Former British Prime Minister john major, former US President Bill Clinton and many other foreign leaders have visited Mutianyu. 1992 was rated as the best tourist destination in Beijing. In 2002, it was rated as 4A-level scenic spot [3].

Mutianyu Pass has been a military fortress guarding Beijing since ancient times because of its very important geographical position. This section connects Juyongguan, Changping County, Beijing in the west and Gubeikou, Miyun County, Beijing in the east. Built in the Ming Dynasty, it is the eastern section of huanghua town, the north gate of the capital. Since ancient times, it has been called the northern barrier to guard the capital and the imperial tomb. Known as the "dangerous mountain".

Simatai Great Wall

The Simatai Great Wall, which has five characteristics of "danger, density, strangeness, cleverness and completeness", is located in the east of Miyun County, Beijing.

Simatai Great Wall (19 photos)

Gubeikou Town in the north is 0/20km away from Beijing/KLOC. It starts from wangjinglou in the east and ends at Houchuankou in the west, with a total length of 5.4 kilometers and 35 watchtowers. The whole section of the Great Wall is exquisite in conception, unique in design, novel in structure and different in shape, and it can be called the essence of the Great Wall in Wan Li. Professor Luo, a famous expert on the Great Wall, praised that the Great Wall in China is the highest in the world, and the Great Wall in Simatai is the highest in China. Simatai Great Wall 1987 is listed in the World Heritage List and belongs to the national key cultural relics protection unit. It is the only ancient building site in China that retains the original appearance of the Ming Dynasty.

The Great Wall of Gu Bei Kou

Gubeikou Great Wall is the most complete in the history of China Great Wall.

Old photos of Gubeikou Great Wall during the Anti-Japanese War (1 1 Zhang)

The whole Great Wall system. It consists of the Northern Qi Great Wall and the Ming Great Wall, including Wohu Mountain, Panlong Mountain, Jinshanling and Simatai. Gubeikou is the Great Wall fortress between Shanhaiguan and Juyongguan. It is the throat of Liaodong Plain and Inner Mongolia leading to the Central Plains. It has always been a battleground for military strategists, especially in Liao, Jin, Yuan, Ming and Qing Dynasties. The competition for Gubeikou has never stopped, so the role of the Great Wall is particularly important.

Jiankou Great Wall

Jiankou Great Wall

Jiankou Great Wall is located in Badaohe Township, northwest of Huairou County, a suburb of Beijing, about 30 kilometers away from Huairou County. The mountains are varied, and the Great Wall above the steep peaks and cliffs is even more majestic and steep. The Great Wall with an arrow buckle is named after the whole section of the Great Wall meanders in a W-shape, like a bow and arrow buckle. The Jiankou Great Wall is one of the most famous dangerous sections of Wan Li Great Wall in Ming Dynasty. It is the section with the highest photogenic rate in various Great Wall albums in recent years, and it has always been a hot spot in Great Wall photography.

The Jiankou Great Wall is the most steep and majestic section of the Great Wall in Beijing, with severe natural weathering and no artificial decoration. It stretches for more than 20 kilometers from Niu Jiao side, South Building, Gate of Hell, Arrow Buckle Beam, East-West Neck Building, East-West Oil Basket Top, General's First Officer, Ladder, Eagle Flying Upside Down, Jiuyan Building and Jingjie to wangjinglou, fully demonstrating the wonders, dangers and dangers of the Great Wall.

Other great walls

Jinshanling Great Wall

Jinshanling Great Wall is located in the Yanshan Mountains at the junction of Miyun County and Luanping County in Hebei Province, which is 40 kilometers away from Beijing/KLOC-0. It starts from Longyukou in the west and ends in wangjinglou in the east, with a total length of 10.5km ... There are 67 enemy towers with different buildings, 2 beacon towers and 5 passes. There are many enemy towers on the Great Wall, generally 50- 100 meters. This wall is based on huge stones and is 5-8 meters high. There are horse-blocking walls, stacked walls and barrier walls, which are various in form and have their own characteristics. Known as the "Great Wall of Wan Li, Jinshan stands out from the crowd".

Shanhaiguan Great Wall

Shanhaiguan Great Wall is where the Great Wall of Wan Li flows into the sea. The Great Wall, which belongs to Shanhaiguan, is 26 kilometers long and mainly

Shanhaiguan (20 sheets)

Including: Laolongtou Great Wall, Guancheng Great Wall in the south wing, Jiao Shan Great Wall in the north wing, Mishimaguan Great Wall and Jiumenkou Great Wall. Laolongtou Great Wall is the end part of the Great Wall that enters the sea, and it has the reputation of "the soul of China".

Shanhaiguan City consists of seven castles: Guancheng, Dongluo City, Xiluo City, South Wing City, North Wing City, Weiyuan City and Ninghai City. The surrounding city walls are 4,769 meters long, 1 1.6 meters high and 10 meters thick. The city walls are tall, solid and magnificent. There are four gates in the east, west, south and north of the city. There are turrets in the southeast corner and northeast corner of the city, and there are magnificent bell and drum towers in the center of the city. The entire Acropolis building is large in scale and the defense project is solid. Shanhaiguan was the product of the garrison system established in Ming dynasty, and the "reclamation system" and reform policy of Ming dynasty played an important role in the consolidation and development of Shanhaiguan.

Great Wall at Jiayuguan Pass

Jiayuguan Great Wall is the starting point of the western end of the Great Wall in Ming Dynasty. It was built in the fifth year of Hongwu in Ming Dynasty (1372). It is the best-preserved Chengguan, the first pass in Hexi and an important stop on the Silk Road. Chengguan is a complete defense system composed of inner city, outer city and moat. The inner city is the main part of the city, which is rammed by loess and covered by city bricks. It is strong and majestic. The walls at both ends of the city pass through the Gobi, and you can feel the desolation of the desert lonely city.

The southwest corner of Jiayuguan City is named after it was built at the foot of Jiayuguan Mountain. It is the end of the western end of the Great Wall in Wan Li in the Ming Dynasty, built at 1372. The Guancheng plane is trapezoidal, covering an area of more than 33,500 square meters, with a total length of 733 meters and a height of 1 1.7 meters. The tower is symmetrical from east to west, three rooms wide and surrounded by cloisters. The top of the three-story rest mountain is 17 meters high, which is magnificent. There is a watchtower at the four corners of Guancheng, which is two stories high and looks like a bunker. From a distance, you can see the scenery outside the village.

Hushan Great Wall

Hushan Great Wall is located in Hushan Scenic Area on the Yalu River15km east of Dandong City, Liaoning Province. The elevation of the main peak of Hushan Mountain146.3m. The summit is the first beacon tower of the Great Wall of Wan Li. Looking around from the beacon tower, Yizhou in North Korea, Mashi Shazhou in China and Yalu River Bridge connecting Dandong and Sinuiju are clearly visible.

Jiumenkou Great Wall

Located in Xintaizi Village, Lijia Township, Suizhong County, Liaoning Province, it is 5 km away from Shanhaiguan 1704m long. Its southern end starts from dangerous peaks and cliffs and connects with the Great Wall from Shanhaiguan. Since then, the Great Wall has extended northward along the ridge to the south bank of the local Jiujiang River. On the Jiujiang River, which is 100 meters wide, a bridge across the river has been built to swim northward in the mountains. "The city walks on water, and the water flows in the city." This is the image description of the Great Wall at Jiumenkou.

Datong great wall

Datong is one of the nine major towns in the Ming Dynasty, with an important strategic position. Datong Great Wall was built in Jiajing period and was founded and repaired by Weng Wanda, a bachelor of Xuanda University. Datong starts from Zhenkoutai, Tianzhen County in the east and ends at Yajiao Mountain (now Qingshuihezi, Inner Mongolia) in the west, with a total length of 335 kilometers. According to the statistics of "Planning, Testing and Illustration of Three Clouds in General Town of Datong", Datong Town has successively built a 5 16.3-mile big side and two sides; 72 castles (20 cities and 52 castles); 776 border towns; There are 833 fire piers. It is a key cultural relic protection unit in Shanxi Province.

Juyongguan

Juyongguan, known as "the first male pass in the world", is one of the oldest and most famous passes on the Great Wall of Wan Li. Its building code

Great Wall (2 pieces)

With its large model and profound cultural connotation, it is the best building in the Great Wall of Wan Li. Juyongguan is located in Guangou Canyon, 48 kilometers northwest of Beijing. There are two mountains and temples here. The mountains are steep and the water is first-class. The Great Wall twists and turns on the mountain, and the towers at the foot of the mountain are magnificent. The halls, offices, pavilions and warehouses in Guancheng are stacked on top of each other. Red walls and green tiles, oil and color paintings set each other off. The valley where Guancheng is located belongs to the mountainous area where Taihang Mountain is a military stronghold. It is famous for its risks and has the potential of "one person is above ten thousand people". Juyongguan not only has dangerous terrain, but also has pleasant scenery. Here the mountains overlap, the streams gurgle, the vegetation is lush and the scenery is pleasant. With its numerous cultural relics and magnificent natural scenery, it has added a tourist attraction to the Great Wall of Wan Li and the capital Beijing. Literati and poets of past dynasties left many praise poems here, and Emperor Qianlong also mentioned the word "Juyong Diecui" here, becoming the first of the famous "Eight Scenes of Yanshan Mountain".

Dajingmen Great Wall

Dajingmen Great Wall is located in Zhangjiakou City, Hebei Province. This is the only pass in the Great Wall named after the gate. Changchengsi

Dajingmen Great Wall

One of the great passes. Dajingmen Great Wall was built in Chenghua period of Ming Dynasty, and it is located on the towering East-West Taiping Mountain. According to the strategic pass of the Great Wall, it is the key to the border pass. The wall of Dajingmen is 12m high, 13m long and 9m wide. On the west side, there is Xijing Gate (small gate) excavated in Wanli period of Ming Dynasty. There are many historical sites in the Ming and Qing Dynasties, such as the Great Wall Park in Xitaipingshan, Laiyuanbao, Xiaojinmen, Guandi Temple, Erlang Temple and Mountain Temple. It is the "first gate of the Great Wall of Wan Li".

Tang Changcheng

The sidewall of the Great Wall Mudanjiang in Tang Dynasty was listed in the World Cultural Heritage List.

In 2007, the State Council officially listed the third section of Mudanjiang side wall of China Great Wall Site as a part of China Great Wall Resources Survey Project, which means that Mudanjiang side wall, known as "Tang Great Wall", is the first project in Mudanjiang City and even Heilongjiang Province to be included in the World Cultural Heritage List.

Mudanjiang side wall is a defense system built to defend the northern blackwater in Bohai period, and it is a military defense project with the same nature as China Great Wall. After investigation, the side wall of Mudanjiang is about 100 km long and consists of three sections. A 50-kilometer-long section of the city wall near Mudanjiang is located in the first line of Sandaoguan. It starts from Jiangxi village, the main peak of Xigou Beishan in the east, winds to the northwest and ends at the north slope of Xidazi. The second section of Mudanjiang side wall is 30 kilometers long, located in the east section of Ning 'an River. It starts from the right bank of Mudanjiang at the turning point of Ning 'an Town, turns to the southeast and continues to develop, ending at the east side of Ning 'an Seed Farm. The third section of Mudanjiang side wall, with a total length of 20 kilometers, is located in Jingbo Lake, starting from the lake on the other side of the city wall, crossing the lakeside mountain, passing through the 20 1 national highway, and developing to the southeast on the southeast mountain of Jiangshan Jiao Forest Farm.

It is reported that Mudanjiang sidewall was approved and announced as a national key cultural relics protection unit in 2006. Since 2008, Mudanjiang Cultural Relics Management Station has organized a professional team of cultural relics protection to conduct a more in-depth investigation on the third section of Mudanjiang side wall to further understand the specific length of Mudanjiang side wall.

2011165438+1October 6th, like Qin Changcheng, Mudanjiang sidewall, which enjoys the reputation of "Great Wall in Tang Dynasty", has been officially listed in the World Cultural Heritage List of China Great Wall.

Qi Changcheng

It is the oldest existing Great Wall in China and the world, with many preserved passages or remains. Its original length is over 65,438+0,000 kilometers.

Regarding the Great Wall of Qi, the earliest date is 555 BC (twenty-seven years). In Zuo Zhuan, it is recorded: "The marquis of Jin cut Qi, and ... the marquis of Qi ruled Pingyin and cut the door to keep it." This is a fortification built by Qi in Pingyin, and this defensive gate has always been an important pass of the Great Wall of Qi.

Qi Changcheng

Historical Records of the Chu Family Justice quoted Miracle as saying that "Qi Xuanwang climbed mountains, built the Great Wall, reached the sea in the east, and reached Jeju in the west, more than 1,000 miles away, ready to cut Chu." The construction record is clearer. It probably began in the Spring and Autumn Period and the Warring States Period and was completed in Qi Weiwang and beyond. The Great Wall of Qi starts from Changqing District of Jinan in the west and ends in Huangdao Economic Development Zone of Qingdao in the east, spanning Shandong Peninsula.

The Great Wall of Qi and the Great Wall of Chu built during the Spring and Autumn Period and the Warring States Period are the oldest Great Walls in China and the world. Among them, the Great Wall has a history of more than 2,500 years. The Great Wall of Qi was built in the Spring and Autumn Period and the Warring States Period, which lasted more than 2,000 years, with a total length of more than 50 million meters. The Great Wall of Wan Li that we refer to today mostly refers to the Great Wall built in the Ming Dynasty, starting from Jiayuguan, Gansu, China in the west and reaching Yalu River, Liaoning in the northeast of China in the east, with a total length of 6.35 million meters.