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78-407: Abao was born in the outskirts of Datong , Shanxi on 27 February 1969. He began singing when he was four, influenced by a local folk singer although he had no formal training. Apart from Shanxi folk songs, he also learned to sing other folk songs, including songs of Shaanbei from neighbouring Shaanxi . He enrolled at Datong Arts School when he was twelve, and graduated in 1986. After graduating, at

156-436: A bronze prize. Following his appearance on the show, he released a CD, self-titled Abao . He then entered the first season of the singing contest Xingguang Dadao . In the final in 2005, he performed "The Wild Lilies Bloom a Brilliant Red" (山丹丹开花红艳艳, Shandandan kaihua hongyanyan ), and won the contest, beating the duo Phoenix Legend . After winning the title, Abao performed regularly on television for many years, including

234-459: A headache for the local government." Su Jiede wrote that since Pingcheng District , which had most of its urbanized area, had 1,105,699 people as of 2020, "Datong is a small city by Chinese standards ". Datong is the northernmost city of Shanxi, and is located in the Datong Basin, with an administrative area spanning latitude 39° 03'–40° 44' N and longitude 112° 34'–114° 33' E. The urban area

312-1349: A large railway locomotive works ' Datong locomotive factory ', where the 'Aiming Higher' ( Chinese : 前进 ; pinyin : Qiánjìn ) class of steam locomotive was built as late as the 1970s. Steam locomotive production ended in the late 1980s and the plant's main products (as of 2010) is mainline electric locomotives. Direct-administered municipalities . Sub-provincial cities as provincial capitals . Separate state-planning cities . Special economic-zone cities . Open coastal cities . Prefecture capital status established by Heilongjiang Province and not recognized by Ministry of Civil Affairs. Disputed by Oroqen Autonomous Banner , Hulunbuir, Inner Mongolia as part of it. Only administers islands and waters in South China Sea and have no urban core comparable to typical cities in China. The claimed province of Taiwan no longer have any internal division announced by Ministry of Civil Affairs of PRC, due to lack of actual jurisdiction. See Template:Administrative divisions of Taiwan instead. 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 "ten thousand li long wall")

390-525: A total length of more than 10 km (6 mi), believed to be part of the Great Wall, were discovered along the border of Ningxia autonomous region and Gansu province. Before the use of bricks, the Great Wall was mainly built from rammed earth, stones, and wood. During the Ming, however, bricks were heavily used in many areas of the wall, as were materials such as tiles, lime , and stone. The size and weight of

468-801: Is figurative in a similar manner to the Greek and English myriad and simply means "innumerable" or "immeasurable". Because of the wall's association with the First Emperor's supposed tyranny , the Chinese dynasties after Qin usually avoided referring to their own additions to the wall by the name "Long Wall". Instead, various terms were used in medieval records, including "frontier(s)" ( 塞 , Sài ), "rampart(s)" ( 垣 , Yuán ), "barrier(s)" ( 障 , Zhàng ), "the outer fortresses" ( 外 堡 , Wàibǎo ), and "the border wall(s)" ( t 邊 牆 , s 边 墙 , Biānqiáng ). Poetic and informal names for

546-755: Is "sixty days' travel" from Zeitun (modern Quanzhou ) in his travelogue Gift to Those Who Contemplate the Wonders of Cities and the Marvels of Travelling . He associated it with the legend of the wall mentioned in the Qur'an , which Dhul-Qarnayn (commonly associated with Alexander the Great ) was said to have erected to protect people near the land of the rising sun from the savages of Gog and Magog . However, Ibn Battuta could find no one who had either seen it or knew of anyone who had seen it, suggesting that although there were remnants of

624-550: Is 7.8 m (25 ft 7 in) high and 5 m (16 ft 5 in) wide. One of the most striking sections of the Ming Great Wall is where it climbs extremely steep slopes in Jinshanling . There it runs 11 km (7 mi) long, ranges from 5 to 8 m (16 ft 5 in to 26 ft 3 in) in height, and 6 m (19 ft 8 in) across the bottom, narrowing up to 5 m (16 ft 5 in) across

702-692: Is a series of fortifications that were built across the historical northern borders of ancient Chinese states and Imperial China as protection against various nomadic groups from the Eurasian Steppe . Several walls were built from as early as the 7th century BC, with selective stretches later joined by Qin Shi Huang (220–206 BC), the first emperor of China . Little of the Qin wall remains. Later on, many successive dynasties built and maintained multiple stretches of border walls. The best-known sections of

780-561: Is abundant year-round, and the city receives 2,671 hours (about 60% of the possible total) of bright sunshine per year. Extremes since 1951 have ranged from −31.9 °C (−25 °F) on 16 December 2023 to 39.2 °C (103 °F) on 29 July 2010. The Yungang Grottoes are a collection of shallow caves located 16 km (9.9 mi) west of Datong. There are over 50,000 carved images and statues of Buddhas and bodhisattvas within these grottoes, ranging from 4 centimeters to 7 meters tall. Most of these icons are around 1500 years old. Within

858-933: Is an old fashioned coal mining city, and still sits on significant reserves of this commodity. Consequently, it has developed a reputation as one of China's most polluted cities. The Datong Coal Mining Group is based here and is China's third largest such enterprise. Datong is indeed however an emerging economy, as the city seeks to loosen its dependence on coal, introduce more environmentally friendly and efficient methods of extraction and move into other areas of business services. The local government has continued to upgrade its pillar coal sector (and related industries like coal chemicals, power and metallurgy), while also developing "substitute industries" such as machinery manufacturing, tourism and distribution, warehousing and logistics services. This has had some impact. Datong's GDP grew by 5.1 percent in 2008 to RMB56.6 billion. While coal will continue to dominate, Datong has been identified as one of

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936-571: Is no more conspicuous than many other human-made objects. Veteran US astronaut Gene Cernan has stated: "At Earth orbit of 100 to 200 miles [160 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." In October 2003, Chinese astronaut Yang Liwei stated that he had not been able to see

1014-519: Is only exceeded by the Chinese Wall, which makes a considerable figure upon the terrestrial globe , and may be discerned at the Moon." The claim was also mentioned by Henry Norman in 1895 where he states "besides its age it enjoys the reputation of being the only work of human hands on the globe visible from the Moon." The issue of "canals" on Mars was prominent in the late 19th century and may have led to

1092-409: Is surrounded on three sides by mountains, with passes only to the east and southwest. Within the prefecture-level city elevations generally increase from southeast to northwest. Datong borders Ulanqab ( Inner Mongolia ) to the northwest and Zhangjiakou ( Hebei ) to the east, Shuozhou (Shanxi) to the southwest, and Xinzhou (Shanxi) to the south. The well-known Datong Volcanic Arc lies nearby in

1170-696: Is the western terminus of the Ming Great Wall. From Jiayu Pass the wall travels discontinuously down the Hexi Corridor and into the deserts of Ningxia , where it enters the western edge of the Yellow River loop at Yinchuan . Here the first major walls erected during the Ming dynasty cut through the Ordos Desert to the eastern edge of the Yellow River loop. There at Piantou Pass ( t 偏 頭 關 , s 偏 头 关 , Piāntóuguān ) in Xinzhou , Shanxi province,

1248-598: The Xintianyou style of Shaanxi. Abao typically performs dressed as a peasant from Shaanxi, wearing a sheepskin jerkin with black pants, and a white towel knotted on his head. Although he is not from northern Shaanxi but neighbouring Shanxi, he became best known for the Xintianyou style of folk songs of Shaanxi, and was called the " Xintianyo Song King" (信天游歌王, xintianyou gewang ). However, he has been criticised by folk song experts for not being authentic in his vocal technique and style. Nevertheless, his popularity changed

1326-554: The Datong Basin . It is 250 kilometres (160 mi) west of Beijing . Datong has a continental , monsoon -influenced steppe climate ( Köppen BSk ), influenced by the 1,000 metres (3,300 ft)+ elevation, with rather long, cold, very dry winters, and very warm summers. Monthly mean temperatures range from −10.5 °C (13.1 °F) in January to 22.6 °C (72.7 °F) in July;

1404-649: The Liaodong province, protecting it against potential incursions by Jurchen-Mongol Oriyanghan from the northwest and the Jianzhou Jurchens from the north. While stones and tiles were used in some parts of the Liaodong Wall, most of it was in fact simply an earth dike with moats on both sides. Towards the end of the Ming, the Great Wall helped defend the empire against the Manchu invasions that began around 1600. Even after

1482-621: The Moon . Even though the myth is thoroughly debunked, it is still ingrained in popular culture. The apparent width of the Great Wall from the Moon would be the same as that of a human hair viewed from 3 km (2 mi) away. One of the earliest known references to the myth that the Great Wall can be seen from the moon appears in a letter written in 1754 by the English antiquary William Stukeley . Stukeley wrote that, "This mighty wall [ Hadrian's wall ] of four score miles [130 km] in length

1560-655: The National Cultural Heritage Administration states that 22% of the Ming Great Wall has disappeared, while 1,961 km (1,219 mi) of wall have vanished. In 2007 it was estimated that more than 60 km (37 mi) of the wall in Gansu province may disappear in the next 20 years, due to erosion from sandstorms . In some places, the height of the wall has been reduced from more than 5 m (16 ft 5 in) to less than 2 m (6 ft 7 in). Various square lookout towers that characterize

1638-557: The National Famous Historical and Cultural Cities that year. Prior to 2008, about 100,000 people lived in the old city. In 2008 mayor Geng Yanbo decided to redevelop much of the inner city, with over 3 square kilometres (1.2 sq mi) being redeveloped, and with Geng becoming known as the "Demolition Mayor". Geng and his group anticipated that 30,000 to 50,000 people would remain in the old city. In 2013 Geng left his position. Su Jiede of Sixth Tone wrote that much of

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1716-544: The Qin dynasty ("Qin Shi Huang") in 221 BC. Intending to impose centralized rule and prevent the resurgence of feudal lords, he ordered the destruction of the sections of the walls that divided his empire among the former states. To position the empire against the Xiongnu people from the north, however, he ordered the building of new walls to connect the remaining fortifications along the empire's northern frontier. "Build and move on"

1794-653: The Xiongnu nomads at the Battle of Baideng . Located near a pass to Inner Mongolia along the Great Wall , Pingcheng blossomed under Han rule and became a stop-off point for camel caravans moving from China into Mongolia and beyond. It was sacked at the end of the Eastern Han . Pingcheng became the capital of the Xianbei-founded Northern Wei dynasty from AD   398–494. The Yungang Grottoes were constructed during

1872-549: The rampart which surrounded traditional Chinese cities and was used by extension for these walls around their respective states ; today, however, it is much more often the Chinese word for "city". The longer Chinese name "Ten-Thousand Mile Long Wall" ( t 萬里長城, s 万里长城, Wànlǐ Chángchéng ) came from Sima Qian's description of it in the Records , though he did not name the walls as such. The AD 493 Book of Song quotes

1950-446: The 13th and 14th centuries, such as Giovanni da Pian del Carpine , William of Rubruck , Marco Polo , Odoric of Pordenone and Giovanni de' Marignolli , mentioned the Great Wall. The North African traveler Ibn Battuta , who also visited China during the Yuan dynasty c.  1346 , had heard about China's Great Wall, possibly before he had arrived in China. He wrote that the wall

2028-477: The 1970s. When the construction of steam locomotives was phased out, the authorities did not want to lose this valuable tourism market, and pondered the possibility of developing a steam railway operating center as an attraction. A number of study visits were undertaken to the East Lancashire Railway at Bury , and a twinning arrangement was concluded with that town. In 2010, work began on reconstructing

2106-406: The 2006 CCTV New Year's Gala . He released his second album in 2006. He has also appeared as a judge on various television shows, including Xingguang Dadao . In 2013, Abao participated in the Chinese reality television show Splash! . Abao has a wide vocal range, and sings in a distinctive high-pitched voice. His style of singing is a mix of folk styles of Shanxi, Mongolia, and in particular

2184-644: The Great Wall at great cost to defend themselves against northern invaders. The Tang and Song dynasties did not undertake any significant effort in the region. Dynasties founded by non-Han ethnic groups also built their border walls: the Xianbei -ruled Northern Wei , the Khitan -ruled Liao , Jurchen -led Jin and the Tangut -established Western Xia , who ruled vast territories over Northern China throughout centuries, all constructed defensive walls but those were located much to

2262-527: The Great Wall of China. In response, the European Space Agency (ESA) issued a press release reporting that from an orbit between 160 and 320 km (100 and 200 mi), the Great Wall is visible to the naked eye. The image was actually a river in Beijing. Leroy Chiao , a Chinese-American astronaut, took a photograph from the International Space Station that shows the wall. It was so indistinct that

2340-559: The Great Wall splits in two with the "Outer Great Wall" ( t 外 長城 , s 外 长城 , Wài Chǎngchéng ) extending along the Inner Mongolia border with Shanxi into Hebei province, and the "Inner Great Wall" ( t 內 長城 , s 內 长城 , Nèi Chǎngchéng ) running southeast from Piantou Pass for some 400 km (250 mi), passing through important passes like the Pingxing Pass and Yanmen Pass before joining

2418-460: The Great Wall. A formal definition of what constitutes a "Great Wall" has not been agreed upon, making the full course of the Great Wall difficult to describe in its entirety. The defensive lines contain multiple stretches of ramparts, trenches and ditches, as well as individual fortresses. In 2012, based on existing research and the results of a comprehensive mapping survey, the National Cultural Heritage Administration of China concluded that

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2496-509: The Great Wall. Perhaps the first recorded instance of a European actually entering China via the Great Wall came in 1605, when the Portuguese Jesuit brother Bento de Góis reached the northwestern Jiayu Pass from India. Early European accounts were mostly modest and empirical, closely mirroring contemporary Chinese understanding of the Wall, although later they slid into hyperbole, including

2574-546: The Outer Great Wall at Sihaiye ( 四海 冶 , Sìhǎiyě ), in Beijing's Yanqing County . The sections of the Great Wall around Beijing municipality are especially famous: they were frequently renovated and are regularly visited by tourists today. The Badaling Great Wall near Zhangjiakou is the most famous stretch of the wall, for this was the first section to be opened to the public in the People's Republic of China, as well as

2652-485: The age of 17, he began to sing in a music bar in Datong, later joining a travelling troupe, singing at weddings and other occasions in villages around the country. He sang in a variety of genre including pop, rock and folk. In 2004, Abao was performing in Beijing when he was spotted by a producer of a TV show. He was placed in folk-singing competition Xibu Mingge Diansi Dasai ( 西部民歌电视大赛) organized by CCTV, for which he received

2730-469: The annual mean temperature is 7.33 °C (45.2 °F). Due to the aridity and elevation, diurnal temperature variation is often large, averaging 13.2 °C (23.8 °F) annually. There barely is any precipitation during winter, and more than 3 ⁄ 4 of the annual precipitation occurs from June to September. With monthly percent possible sunshine ranging from 54% in July to 66% in October, sunshine

2808-406: The belief that long, thin objects were visible from space. The claim that the Great Wall is visible from the moon also appears in 1932's Ripley's Believe It or Not! strip. A more controversial question is whether the wall is visible from low Earth orbit (an altitude of as little as 160 km (100 mi)). NASA claims that it is barely visible, and only under nearly perfect conditions; it

2886-404: The bricks made them easier to work with than earth and stone, so construction quickened. Additionally, bricks could bear more weight and endure better than rammed earth. Stone can hold under its own weight better than brick, but is more difficult to use. Consequently, stones cut into rectangular shapes were used for the foundation, inner and outer brims , and gateways of the wall. Battlements line

2964-905: The city itself, there are a few surviving sites of historical interest such as the Nine-Dragon Wall , the Huayan Monastery ( 华严寺 ; Huáyán Sì ), and the Shanhua Temple . Further afield is the Hanging Temple built into a cliff face near Mount Heng . Most of the historical sites in this region date to the Liao, Jin and Ming dynasties, but the Hanging Temple dates to the Northern Wei dynasty (386–534). The railway locomotive works (see below) began to attract increasing numbers of railway enthusiasts from

3042-419: The city was still under construction at the time and that Geng's efforts resulted in "a half-finished city center and a complicated legacy" and that "To critics, the city had spent enormous sums of money without much to show for it." By 2020 the population of the old city was below 30,000 and there were fewer governmental facilities available for the residents. That year Su stated that the old city "still presents

3120-426: The city's 14th century Ming dynasty defensive wall. The controversial reconstruction project was in its final phase at the end of 2014. The documentary The Chinese Mayor documents two years of vigorous and highly controversial (due to summary demolition of about 200,000 homes) effort by Mayor Geng Yanbo to push the reconstruction project forward. Datong is known for its knife-cut noodles . The GDP per capita

3198-554: The commanding Ming general, Wu Sangui , who formed an alliance with the Manchus, hoping to use the Manchus to expel the rebels from Beijing. The Manchus quickly seized Beijing, and eventually defeated both the Shun dynasty and the remaining Ming resistance , consolidating the rule of the Qing dynasty over all of China proper . Under Qing rule, China's borders extended beyond the walls and Mongolia

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3276-612: The control of the Ming dynasty , serving as an important Ming military stronghold against the Mongols to the north. During the Ming period, many of Datong's notable historical structures such as the Drum Tower and the Nine-Dragon Wall were built. Datong was sacked again at the end of the Ming in 1649, but promptly rebuilt in 1652. By 1982 a portion of its city walls remained so it became one of

3354-472: The east. As of the 2020 census, it had a population of 3,105,591 of whom 1,790,452 lived in the built-up (or metro) area made of the 2 out 4 urban districts of Pingcheng and Yungang as Yunzhou and Xinrong are not conurbated yet. The area of present-day Datong was close to the state of Dai , which was conquered by the Zhao clan of Jin in 457 BC. It was a frontier land between the agricultural Chinese and

3432-587: The east. This section was one of the first to be renovated following the turmoil of the Cultural Revolution . At the edge of the Bohai Gulf is Shanhai Pass , considered the traditional end of the Great Wall and the "First Pass Under Heaven ". The part of the wall inside Shanhai Pass that meets the sea is named the "Old Dragon Head". 3 km (2 mi) north of Shanhai Pass is Jiaoshan Great Wall ( t 焦山 長城 , s 焦 山 长城 , Jiāoshān Chángchéng ),

3510-450: The edge of the Mongolian steppe ; spanning 21,196.18 km (13,170.70 mi) in total. Today, the defensive system of the Great Wall is generally recognized as one of the most impressive architectural feats in history. The collection of fortifications known as the Great Wall of China has historically had a number of different names in both Chinese and English. In Chinese histories ,

3588-460: The erroneous but ubiquitous claim that the Ming walls were the same ones that were built by the first emperor in the 3rd century BC. When China opened its borders to foreign merchants and visitors after its defeat in the First and Second Opium Wars , the Great Wall became a main attraction for tourists. The travelogues of the later 19th century further enhanced the reputation and the mythology of

3666-545: The exact length and course of the Qin walls. Most of the ancient walls have eroded away over the centuries, and very few sections remain today. The human cost of the construction is unknown, but it has been estimated by some authors that hundreds of thousands of workers died building the Qin wall. Later, the Han , the Northern dynasties and the Sui all repaired, rebuilt, or expanded sections of

3744-449: The flavours of those folk songs performed by other folk singers, a process described as the "Abao phenomenon" by a scholar. Datong Datong is a prefecture-level city in northern Shanxi Province in the People's Republic of China . It is located in the Datong Basin at an elevation of 1,040 metres (3,410 ft) and borders Inner Mongolia to the north and west and Hebei to

3822-466: The frontier general Tan Daoji referring to "the long wall of 10,000 miles", closer to the modern name, but the name rarely features in pre-modern times otherwise. The traditional Chinese mile ( 里 , lǐ ) was an often irregular distance that was intended to show the length of a standard village and varied with terrain but was usually standardized at distances around a third of an English mile (540 m). However, this use of "ten-thousand" ( wàn )

3900-493: The key cities requiring redevelopment, with part of this being in environmental cleanup, rehabilitation and industrial refocusing. Datong is a pilot city for rehabilitation studies following years of pollution. To this end it has already struck up strong relationships with other cities worldwide with similar backgrounds, and has begun plans, for example, to develop a tourism base focused on steam engine technology with antique locomotives to be used along designated tracks. Datong has

3978-677: The later part of this period (460–494). During the mid to late 520s, Pingcheng was the seat of Northern Wei's Dai Commandery . During the Tang dynasty , Datong became the seat of the Tang prefecture of Yunzhou , and the original Guandi temple was built. The city was renamed Datong in 1048. It was the Xijing ("Western Capital") of the Jurchen Jin dynasty prior to being sacked by the Mongols . Datong later came under

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4056-509: The long-drawn conflict was taking a toll on the empire. The Ming adopted a new strategy to keep the nomadic tribes out by constructing walls along the northern border of China. Acknowledging the Mongol control established in the Ordos Desert , the wall followed the desert's southern edge instead of incorporating the bend of the Yellow River . Unlike the earlier fortifications, the Ming construction

4134-458: The loss of all of Liaodong , the Ming army held the heavily fortified Shanhai Pass , preventing the Manchus from conquering the Chinese heartland. The Manchus were finally able to cross the Great Wall in 1644, after Beijing had already fallen to Li Zicheng 's short-lived Shun dynasty . Before this time, the Manchus had crossed the Great Wall multiple times to raid, but this time it was for conquest. The gates at Shanhai Pass were opened on May 25 by

4212-399: The means of smoke or fire, and the fact that the path of the Great Wall also served as a transportation corridor. The frontier walls built by different dynasties have multiple courses. Collectively, they stretch from Liaodong in the east to Lop Lake in the west, from the present-day Sino–Russian border in the north to Tao River (Taohe) in the south; along an arc that roughly delineates

4290-466: The mortar or any part of the wall, contrary to what a legend states. Communication between the army units along the length of the Great Wall, including the ability to call reinforcements and warn garrisons of enemy movements, was of high importance. Signal towers were built upon hill tops or other high points along the wall for their visibility. Wooden gates could be used as a trap against those going through. Barracks, stables, and armories were built near

4368-504: The most famous images of the wall have disappeared. Many western sections of the wall are constructed from mud , rather than brick and stone, and thus are more susceptible to erosion. In 2014 a portion of the wall near the border of Liaoning and Hebei province was repaired with concrete. The work has been much criticized. A section of the wall in Shanxi province was severely damaged in 2023 by construction workers, who widened an existing gap in

4446-464: The nineteenth century, "the Great Wall of China" had become standard in English and French, although other European languages such as German continue to refer to it as "the Chinese wall". The Chinese were already familiar with the techniques of wall-building by the time of the Spring and Autumn period between the 8th and 5th centuries BC. During this time and the subsequent Warring States period ,

4524-483: The nomads of the Great Steppe . The area was well known for its trade in horses . The area of present-day Datong eventually came under the control of the Qin dynasty , during which it was known as Pingcheng County (平城县) and formed part of the Qin commandery of Yanmen . Pingcheng County continued under the Han dynasty , which founded a site within present-day Datong in 200   BC following its victory against

4602-498: The north of the other Great Walls as we know it, within China's autonomous region of Inner Mongolia and in modern-day Mongolia itself. The Great Wall concept was revived again under the Ming in the 14th century, and following the Ming army's defeat by the Oirats in the Battle of Tumu . The Ming had failed to gain a clear upper hand over the Mongol tribes after successive battles, and

4680-585: The one contained in João de Barros 's 1563 Asia . Other early accounts in Western sources include those of Gaspar da Cruz , Bento de Goes , Matteo Ricci , and Bishop Juan González de Mendoza , the latter in 1585 describing it as a "superbious and mightie work" of architecture, though he had not seen it. In 1559, in his work "A Treatise of China and the Adjoyning Regions", Gaspar da Cruz offers an early discussion of

4758-735: The remainder date back to Northern Wei , Northern Qi , Sui , Tang , the Five Dynasties , Song , Liao and Xixia . About half of the sites are located in Inner Mongolia (31%) and Hebei (19%). Han fortifications starts from Yumen Pass and Yang Pass , southwest of Dunhuang , in Gansu province. Ruins of the remotest Han border posts are found in Mamitu ( t 馬 迷途 , s 马 迷途 , Mǎmítú , l "horses losing their way" ) near Yumen Pass. The Jiayu Pass , located in Gansu province,

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4836-781: The remaining Great Wall associated sites include 10,051 wall sections, 1,764 ramparts or trenches, 29,510 individual buildings, and 2,211 fortifications or passes, with the walls and trenches spanning a total length of 21,196.18 km (13,170.70 mi). Incorporating advanced technologies, the study has concluded that the Ming Great Wall measures 8,850 km (5,500 mi). This consists of 6,259 km (3,889 mi) of wall sections, 359 km (223 mi) of trenches and 2,232 km (1,387 mi) of natural defensive barriers such as hills and rivers. In addition, Qin , Han and earlier Great Wall sites are 3,080 km (1,914 mi) long in total; Jin dynasty (1115–1234) border fortifications are 4,010 km (2,492 mi) in length;

4914-413: The showpiece stretch for foreign dignitaries. The Badaling Great Wall saw nearly 10 million visitors in 2018, and in 2019, a daily limit of 65,000 visitors was instated. South of Badaling is the Juyong Pass ; when it was used by the Chinese to protect their land, this section of the wall had many guards to defend the capital Beijing. Made of stone and bricks from the hills, this portion of the Great Wall

4992-474: The site of the first mountain of the Great Wall. 15 km (9 mi) northeast from Shanhaiguan is Jiumenkou ( t 九 門 口 , s 九 门 口 , Jiǔménkǒu ), which is the only portion of the wall that was built as a bridge. In 2009, 180 km of previously unknown sections of the Ming wall concealed by hills, trenches and rivers were discovered with the help of infrared range finders and GPS devices. In March and April 2015, nine sections with

5070-408: The states of Qin , Wei , Zhao , Qi , Han , Yan , and Zhongshan all constructed extensive fortifications to defend their own borders. Built to withstand the attack of small arms such as swords and spears, these walls were made mostly of stone or by stamping earth and gravel between board frames. King Zheng of Qin conquered the last of his opponents and unified China as the First Emperor of

5148-525: The term "Long Wall(s)" ( t 長城, s 长城, Chángchéng ) appears in Sima Qian 's Records of the Grand Historian , where it referred both to the separate great walls built between and north of the Warring States and to the more unified construction of the First Emperor . The Chinese character 城 , meaning city or fortress, is a phono-semantic compound of the "earth" radical 土 and phonetic 成 , whose Old Chinese pronunciation has been reconstructed as * deŋ . It originally referred to

5226-402: The top. Wangjing Lou ( t 望 京 樓 , s 望 京 楼 , Wàngjīng Lóu ) is one of Jinshanling's 67 watchtowers , 980 m (3,220 ft) above sea level. Southeast of Jinshanling is the Mutianyu Great Wall which winds along lofty, cragged mountains from the southeast to the northwest for 2.25 km (1.40 mi). It is connected with Juyongguan Pass to the west and Gubeikou to

5304-411: The uppermost portion of the vast majority of the wall, with defensive gaps a little over 30 cm (12 in) tall, and about 23 cm (9.1 in) wide. From the parapets, guards could survey the surrounding land. Sticky rice mortar , consisting of sticky rice soup mixed with slaked lime , was extensively used to hold bricks together; no human bones or body parts were ever incorporated into

5382-409: The wall at that time, they were not significant. Soon after Europeans reached Ming China by ship in the early 16th century, accounts of the Great Wall started to circulate in Europe, even though no European was to see it for another century. Possibly one of the earliest European descriptions of the wall and of its significance for the defense of the country against the " Tartars " (i.e. Mongols) may be

5460-667: The wall included "the Purple Frontier" ( 紫 塞 , Zǐsài ) and "the Earth Dragon" ( t 土 龍 , s 土 龙 , Tǔlóng ). Only during the Qing period did "Long Wall" become the catch-all term to refer to the many border walls regardless of their location or dynastic origin, equivalent to the English "Great Wall". Sections of the wall in south Gobi Desert and Mongolian steppe are sometimes referred to as "Wall of Genghis Khan", even though Genghis Khan did not construct any walls or permanent defense lines himself. The current English name evolved from accounts of "the Chinese wall" from early modern European travelers. By

5538-421: The wall to make a shortcut for an excavator to pass through. Police described the act as causing "irreversible damage to the integrity of the Ming Great Wall and to the safety of the cultural relics". Various factoids in popular culture claim that the Great Wall can be seen (with the naked eye) from space, with questionable degrees of veracity. The Great Wall of China cannot be seen by the naked human eye from

5616-535: The wall were built by the Ming dynasty (1368–1644). Apart from defense, other purposes of the Great Wall have included border controls , allowing the imposition of duties on goods transported along the Silk Road , regulation or encouragement of trade and the control of immigration and emigration. Furthermore, the defensive characteristics of the Great Wall were enhanced by the construction of watchtowers , troop barracks, garrison stations, signaling capabilities through

5694-504: The wall's inner surface. While portions north of Beijing and near tourist centers have been preserved and even extensively renovated, in many other locations the wall is in disrepair. The wall sometimes provided a source of stones to build houses and roads. Sections of the wall are also prone to graffiti and vandalism , while inscribed bricks were pilfered and sold on the market for up to 50 renminbi . Parts have been destroyed to make way for construction or mining. A 2012 report by

5772-406: The wall, faced sections of the ram-earth wall with bricks and constructed 1,200 watchtowers from Shanhaiguan Pass to Changping to warn of approaching Mongol raiders. During the 1440s–1460s, the Ming also built a so-called "Liaodong Wall". Similar in function to the Great Wall (whose extension, in a sense, it was), but more basic in construction, the Liaodong Wall enclosed the agricultural heartland of

5850-441: Was a central guiding principle in constructing the wall, implying that the Chinese were not erecting a permanently fixed border. Transporting the large quantity of materials required for construction was difficult, so builders always tried to use local resources. Stones from the mountains were used over mountain ranges, while rammed earth was used for construction in the plains. There are no surviving historical records indicating

5928-613: Was annexed into the empire, so constructions on the Great Wall were discontinued. On the other hand, the so-called Willow Palisade , following a line similar to that of the Ming Liaodong Wall, was constructed by the Qing rulers in Manchuria. Its purpose, however, was not defense but rather to prevent Han Chinese migration into Manchuria. None of the Europeans who visited China or Mongolia in

6006-432: Was stronger and more elaborate due to the use of bricks and stone instead of rammed earth. Up to 25,000 watchtowers are estimated to have been constructed on the wall. As Mongol raids continued periodically over the years, the Ming devoted considerable resources to repair and reinforce the walls. Sections near the Ming capital of Beijing were especially strong. Qi Jiguang between 1567 and 1570 also repaired and reinforced

6084-412: Was ¥17,852 (US$ 2,570) per annum in 2008, ranked no. 242 among 659 Chinese cities. Coal mining is the dominant industry of Datong. Its history and development are very much linked to this commodity. Development zones Datong Economic and Technological Development Zone Due to its strategic position, it is also an important distribution and warehousing center for Shanxi, Hebei and Inner Mongolia. Datong

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