great wall of china

The Great Wall of China (Traditional Chinese: 萬里長城, Simplified Chinese: 万里长城; pinyin: Wànlǐ Chángchéng; literally "10,000 Li (里)¹ long wall") is a Chinese fortification built from the 3rd century BC until the beginning of the 17th century, in order to protect the various dynasties from raids by Hunnic, Mongol, Turkic, and other nomadic tribes coming from areas in modern-day Mongolia and Manchuria. Several walls were built since the 3rd century BC, the most famous being the Great Wall of China built between 220 BC and 200 BC by the first Emperor of China, Qin Shi Huang (this was located much further north than the current Great Wall of China built during the Ming Dynasty, and little of it remains).

The Great Wall is the world's longest man-made structure, stretching over a formidable 6,352 km (3,948 miles), with a thickness ranging from 4.5 to 9 meters (15-30 feet), and in some areas up to 7.5 meters (25 feet) tall. It runs from Shanhai Pass on the Bohai Sea in the east, at the limit between "China proper" and Manchuria (Northeast China), to Lop Nur in the southeastern portion of Xinjiang Uygur Autonomous Region. Along most of its arc, it roughly delineates the border between North China and Inner Mongolia.

History of the Great Wall of China

A defensive wall on the northern border was built and maintained by several dynasties at different times in Chinese history. There have been five major walls:

1. 208 BCE (Qin Dynasty)
2. 1st century BCE (Han Dynasty)
3. 7th century CE (Sui Dynasty)
4. 1138–1198 (Five Dynasties and Ten Kingdoms Period)
5. 1368–1640 (from Hongwu Emperor until Wanli Emperor of the Ming Dynasty)

The first major wall was built during the reign of the first Emperor of China, Qin Shi Huangdi. This wall was not constructed as a single endeavor, but was mostly the product of joining several regional walls built by the Warring States. The walls that were linked together at this time consisted of rammed earth with watch towers built at regular intervals. It was located much further north than the current Great Wall with its eastern end at modern day North Korea. Very little of this first wall remains; photos reveal a low, long mound.

The government ordered people to work on the wall, and workers were under perpetual danger of being attacked by brigands. The construction was supervised under the command of the Qin general Meng Tian. Construction of the wall involved the mobilization of vast amounts of labor, including forced conscription of criminals, prisoners of war, and political dissidents. Because many people died while building the wall, it has obtained the gruesome title, "longest cemetery on Earth" or "the long graveyard". Possibly as many as one million workers died building the wall, though the true numbers cannot be determined now. The people that died were not buried in the wall, since decomposing bodies would have weakened the structure.

The later long walls built by the Han, the Sui, and the Ten Kingdoms period were also built along the same design. They were made of rammed earth with multi-story watch towers built every few miles. These walls have also largely vanished into the surrounding landscape, eroded away by wind and rain.

In military terms, these walls were more frontier demarcations than defensive fortifications of worth. Certainly Chinese military strategy did not revolve around holding the wall; instead, it was the cities themselves that were fortified.

The Great Wall which most tourists visit today was built during the Ming Dynasty, starting around the year 1368 and lasting till around 1640. Work on the wall started as soon as the Ming took control of China but, initially, walls were not the Ming's preferred response to raids out of the north. That attitude began to change in response to the Ming's inability to defeat the Oirat war leader Esen Taiji in the period 1449 to 1454. A huge Ming Dynasty army with the Zhengtong Emperor at its head was annihilated in battle and the Emperor himself held hostage in 1449.

Apparently the real focus on wall building started as a result of Altan Khan's siege of Beijing which took place one hundred years later in 1550. The Ming, faced with the choice of trying to defeat the Mongols with direct military force, chose instead to build a massive defensive barrier to protect China. As a result, most of the Ming Great Wall was built in the period 1560 to 1640. This new wall was built on a grand scale with longer lasting materials (solid stone used for the sides and the top of the Wall) than any wall built before.

The Ming Dynasty Great Wall starts on the eastern end at Shanhai Pass, near Qinhuangdao, in Hebei Province, next to Bohai Gulf. Spanning nine provinces and 100 counties, the final 500 km (~300 mi) have all but turned to rubble, and today it ends on the western end at the historic site of Jiayuguan Pass (also called Jiayu Pass) (嘉峪关), located in northwest Gansu Province at the limit of the Gobi Desert and the oases of the Silk Road. Jiayuguan Pass was intended to greet travelers along the Silk Road. Even though The Great Wall ends at Jiayu Pass, there are many watchtowers (烽火台 fēng huǒ tái) extending beyond Jiayu Pass along the Silk Road. These towers communicated by smoke to signal invasion.

In 1644, the Kokes Manchus crossed the Wall by convincing an important general Wu Sangui to open the gates of Shanhai Pass and allow the Manchus to cross. Legend has it that it took three days for the Manchu armies to pass. After the Manchu conquered China, the Wall was of no strategic value, mainly because the Manchu extended their political control far to the north. See more on the Manchu Dynasty.

Before the Second Sino-Japanese War, as a result of the failed defense of the Great Wall, the Great Wall became a de facto border between the Republic of China and Manchukuo.

Areas of the Wall

The “North Pass” of Juyongguan Pass is known as the Badaling. This particular area of the Great Wall is where most tourists visit. When used by the Chinese to protect their land, this wall was extremely protected by guards, because it was protecting China’s capital, Beijing. Badaling is very difficult to access. Made out of stone and bricks from the hills, this portion of the Great Wall is 7.8 meters high, and 5 meters wide.

Representing the Ming Great Wall, Jinshanling is considered to have the most wonderful sights of the Great Wall. It runs 11 kilometers long, ranges from 5 to 8 meters in height, and 6 meters across the bottom, narrowing up to 5 meters across the top. Wangjinglou is one it Jinshanling’s 67 watchtowers, rising 980 meters above sea level.

ShanHaiGuan Great Wall is referd to as the “Museum of the Construction of the Great Wall, because of a temple, the Meng Jiang-Nu Temple, built during the Song Dynasty. The ShanHaiGuan Great Wall is known for many different things, both with the construction of the wall, and also its history. The Old Dragon’s Head is one of the aspects this part of the Great Wall is known for; this is the only part of the Great Wall that actually meets the sea. The first pass of the Great Wall was located on the ShanhaiGuan (known as the “Number One Pass Under Heaven”), the first mountain the Great Wall climbs, Jia Shan, is also located here, as is the Jiumenkou, which is the only portion of the wall that was built as a bridge.

Characteristics of the Wall

The steps that form the Great Wall of China are very steep and tall in some areas of the wall. When climbing up the Wall, it feels like climbing an almost completely vertical mountain; and feels the same way going back down the Wall. Tourists get very exhausted climbing the wall, and many don’t climb but a mile of it because of this reason. Along the wall on either side, are “holes” where the builders of the Great Wall didn’t put brick. They are a little over a foot tall, and about 9 inches in width. These holes were used to shoot arrows out of when being attacked.

Condition

While some portions near tourist centers have been preserved and even reconstructed, in many locations the Wall is in disrepair, serving as a playground for some villages and a source of stones to rebuild houses and roads. Sections of the Wall are also prone to graffiti and vandalism. Parts have been destroyed because the Wall is in the way of construction sites. Intact or repaired portions of the Wall near developed tourist areas are often plagued with hawkers of tourist kitsch. After one of the many runs for charity along the Great Wall, H.J.P Arnold questioned several runners about the status of the wall. A typical response was "The wall was clearly discernible and only moderately eroded along 22% of the run. The Wall was usually discernible but frequently broken/eroded 41% of the run, and scarcely discernible and almost totally eroded 37% of the run."

Watchtowers and barracks

The wall is complemented by defensive fighting stations, to which wall defenders may retreat if overwhelmed. With more than 10,000 watch towers (which were used to store weapons, house troops, and send smoke signals), each tower has unique and restricted stairways and entries to confuse attackers. Barracks and administrative centers are located at larger intervals.

Recognition

The Wall was made a UNESCO World Heritage Site in 1987.

Mao Zedong had a saying, Simplified Chinese: 不到长城非好汉, Traditional Chinese: 不到長城非好漢, pinyin: Bú dào Chángchéng fēi hǎo hàn, roughly meaning "You're not a real man if you haven't climbed the Great Wall".

From outer space

There is a long-standing disagreement about how visible the wall is from space.

Richard Halliburton's 1938 book Second Book of Marvels said the Great Wall is the only man-made object visible from the moon, and a Ripley's Believe It or Not! cartoon from the same decade makes a similar claim. This belief has persisted, assuming urban legend status, sometimes even entering school textbooks. Arthur Waldron, author of the most authoritative history of the Great Wall, has speculated that the belief might go back to the fascination with the "canals" once believed to exist on Mars. (The logic was simple: If people on Earth can see the Martians' canals, the Martians might be able to see the Great Wall.)

In fact, the Great Wall is only a few meters wide - similar in size to highways and airport runways - and is about the same color as the soil surrounding it. It cannot be seen by the unaided eye from the distance of the moon, much less from Mars. If the Great Wall were visible from the moon, it would be easy to see from near-Earth orbit, but from near-Earth orbit it is barely visible, and only under nearly perfect conditions; it is no more conspicuous than many other manmade objects.

Astronaut William Pogue thought he had seen it from Skylab but discovered he was actually looking at the Grand Canal of China near Beijing. He spotted the Great Wall with binoculars, but said that "it wasn't visible to the unaided eye." US Senator Jake Garn claimed to be able to see the Great Wall with the naked eye from a space shuttle orbit in the early 1980s, but his claim has been disputed by several US astronauts. Chinese astronaut Yang Liwei said he could not see it at all.

Veteran US astronaut Gene Cernan has stated: "At Earth orbit of 160 km to 320 km high, the Great Wall of China is, indeed, visible to the naked eye." Ed Lu, Expedition 7 Science Officer aboard the International Space Station, adds that, "it's less visible than a lot of other objects. And you have to know where to look."

Neil Armstrong stated: "On Apollo 11) I do not believe that, at least with my eyes, there would be any man-made object that I could see. I have not yet found somebody who has told me they've seen the Wall of China from Earth orbit. ... I've asked various people, particularly Shuttle guys, that have been many orbits around China in the daytime, and the ones I've talked to didn't see it." [1]

Leroy Chiao, a Chinese-American astronaut, took a photograph from the International Space Station that shows the wall. It was so indistinct that the photographer was not certain he had actually captured it. Based on the photograph, the state-run China Daily newspaper concluded that the Great Wall can be seen from space with the naked eye, under favorable viewing conditions, if one knows exactly where to look [2].

These inconsistent results suggest the visibility of the Great Wall depends greatly on the seeing conditions, and also the direction of the light (oblique lighting widens the shadow). Features on the moon that are dramatically visible at times can be undetectable at other times due to changes in lighting direction; the same would be true of the Great Wall.

See also

• Defense of the Great Wall
• Great Wall of China hoax
• Great Wall of China Marathon
• List of walls
• Badaling
• Jumenbu
• Separation barrier
• Great Firewall of China

Further reading

• Roland Michaud (Photographer), Sabrina Michaud (Photographer), Michel Jan, The Great Wall of China (2001) ISBN 0-7892-0736-2
• Arthur Waldron, The Great Wall of China: From History to Myth. Cambridge: Cambridge University Press. 1990.
• H.J.P Arnold, The Great Wall: is it or isn't it? Astronomy Now, 1995

References

External links

• Photos of Great Wall in Simatai
• The Great Wall of China exhibition at the Powerhouse Museum, Sydney

Notes

¹ 10,000 li = 5,760 km (3,580 miles). In Chinese, 10,000 figuratively means "infinite", and the number should not be interpreted for its actual value, but rather as meaning the "infinitely long wall".

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