 = Architecture of the Song dynasty = 
 
 The architecture of the Song dynasty ( 960 – 1279 ) was noted for its towering Buddhist pagodas , enormous stone and wooden bridges , lavish tombs , and extravagant palaces . Although literary works on architecture existed beforehand , architectural writing <unk> during the Song dynasty , <unk> into a more professional form that described dimensions and working materials in a <unk> , organized manner . In addition to the examples still standing , depictions in Song artwork , architectural drawings , and illustrations in published books all aid modern historians in understanding the architecture of the period . 
 The professions of architect , master craftsman , carpenter , and structural engineer did not have the high status of the Confucian scholar @-@ officials during the dynastic era . Architectural knowledge had been passed down orally for thousands of years , usually from craftsman fathers to their sons . There were also government agencies and schools for construction , building , and engineering . The Song dynasty 's building manuals aided not only the various private workshops , but also the craftsmen employed by the central government . 
 
 = = City and palace = = 
 
 The layout of ancient Chinese capitals , such as Bianjing , capital of the Northern Song , followed the guidelines in <unk> Gong Ji , which specified a square city wall with several gates on each side and passageways for the emperor . The outer city of ancient Bianjing was built during the reign of Emperor <unk> to a rectangular plan , almost square in proportions , about 6 km ( 3 @.@ 7 mi ) from north to south and 7 km ( 4 @.@ 3 mi ) from west to east . The south wall had three gates , with <unk> Gate in the center , <unk> Gate to the east , and <unk> Gate to the west . The other walls had four gates each : in the east wall were <unk> Gate ( at the southern end ) , <unk> Gate , <unk> Gate , and North @-@ East Water Gate ; in the west wall <unk> Gate , West Water Gate , <unk> Gate , and <unk> Gate ; and in the north wall <unk> Gate ( at the eastern end ) , <unk> Gate , New Wild <unk> Gate and <unk> Gate . The gates in the center of each of the four sides were reserved for the emperor ; these gates had straight passages and only two sets of doors , while the other city gates had <unk> passages and were guarded by three sets of doors . 
 The Song artist Zhang <unk> 's painting Along the River During the <unk> Festival depicts the <unk> Gate in detail : the building on top had a five @-@ <unk> roof with a shallow slope in the Song dynasty style , supported prominently by two sets of brackets ( dougong ) . The lower bracket assembly rested on the city gate to form a wooden foundation , while the upper assembly supported the roof , similar to the dougong in an extant Song building , the Goddess Temple in Taiyuan . This method of using bracket assemblies to support superstructure was specified in Li Jie 's 12th @-@ century building manual Yingzao Fashi as <unk> ( literally " flat base " ) . 
 The city wall itself was built with rammed earth , a technique also detailed in Yingzao Fashi , vol . III , " Standards for <unk> , <unk> and <unk> Work " : 
 Foundation : For every square chi , apply two dan of earth ; on top of it lay a mixture of broken brick , tile and crushed stones , also two dan . For every five @-@ cun layer of earth , two men , standing face to face , should tamp six times with <unk> , each man pounding three times on a dent ; then tamp four times on each dent , two men again standing face to face , each pounding twice on the same dent ; then tamp two more times , each man pounding once . Following this , tamp the surface with <unk> or stamp with feet randomly to even out the surface . Every five @-@ cun layer of earth should be compressed to three cun ; every three @-@ cun layer of brick and stone to one and a half cun . 
 <unk> @-@ earth walls during this time were tapered : the thickness of the wall is greatest at the base and decreases steadily with increasing height , as detailed in Li Jie 's book . 
 During the Song dynasty , the city of Bianjing had three enclosures : the outer city wall , the inner city wall , and the palace at the center . The inner city was rectangular , with three doors on each side . The palace enclosure was also rectangular , with a watch tower on each of the four corners . It had four main gates : <unk> Gate to the west , <unk> Gate to the east , <unk> Gate to the north , and Xuande Gate , also known as <unk> Gate or <unk> , at the south . Xuande Gate had five @-@ <unk> doors , painted red and decorated with gold <unk> ; its walls were lavishly decorated with dragon , <unk> and floating @-@ cloud patterns to match the carved beams , painted <unk> and glazed @-@ tile roof . There were also two glazed <unk> , each biting an end of the <unk> ridge , its tail pointing to the sky . The symbolic function of these chi wei was explained in Yingzao Fashi : 
 There is a dragon in the East Sea , whose tail ( wei ) is similar to that of a sparrow @-@ hawk ( chi ) ; it <unk> up waves and causes rainfall , so people put its likeness on the <unk> to prevent fire . However , they <unk> it " sparrow @-@ hawk tail " ( chi wei ) . 
 Running southward from Xuande Gate was the Imperial Boulevard , about two hundred paces wide , with the Imperial <unk> on either side . <unk> opened shops in the <unk> until <unk> , when they were banned . Two rows of black fencing were placed at the center of the boulevard as a barrier to pedestrians and carriages . Along the inner sides of the fences ran the brick @-@ lined Imperial Water <unk> , filled with lotus . About 400 m ( 1 @,@ 300 ft ) south from Xuande Gate , the <unk> River intercepted the Imperial Boulevard , which crossed it over the stone Zhou Bridge , <unk> and flat @-@ <unk> . This design of a boulevard with a stone bridge crossing a river was later imitated in the Forbidden City . During spring and summer , <unk> peach , plum , pear and apricot trees adorned the banks of the <unk> with a variety of flowers . 
 
 = = Buddhist pagodas = = 
 
 Following the reign of the Han dynasty , ( 202 BC – 220 AD ) , the idea of the Buddhist stupa entered Chinese culture , as a means to house and protect <unk> <unk> . During the Southern and Northern <unk> period , the distinctive Chinese pagoda was developed , its predecessors being the tall watch towers and towering residential apartments of the Han dynasty ( as inferred from models in Han @-@ era tombs ) . During the <unk> ( <unk> – 618 ) and Tang ( 618 – 907 ) periods , Chinese pagodas were developed from purely wooden structures to use articulated stone and brick , which could more easily survive fires caused by lightning or <unk> and were less susceptible to decay . The earliest brick pagoda that remains extant is the <unk> Pagoda , built in 523 , and a typical example of a Tang @-@ era stone pagoda is the Giant Wild Goose Pagoda , constructed in <unk> . Although Buddhist influences on China <unk> after the late Tang period , numerous Buddhist pagoda towers were built during the Song dynasty . <unk> Chinese pagodas were often built in the countryside rather than within a city 's walls , largely to avoid competition with the cosmic @-@ imperial authority embodied in the cities ' <unk> and gate @-@ towers . The Giant Wild Goose Pagoda , built in a city ward of what was southeastern Chang 'an , is among the exceptions . 
 The Iron Pagoda of <unk> Temple in Kaifeng earned it name from the iron @-@ grey color of the glazed bricks forming the tower . Originally built of wood by the architect Yu Hao , it was struck by lightning and burned down in 1044 , during the Northern Song period . In <unk> the pagoda was rebuilt as it appears today , under the order of Emperor <unk> of Song . This 13 @-@ story pagoda , structured on an octagonal base , is 56 @.@ 88 meters ( 186 @.@ 6 ft ) tall . Its glazed tile bricks feature carved artwork of dancing figures , solemn ministers , and Buddhist themes ( see gallery below ) . 
 The period also featured true cast @-@ iron pagodas , such as the Iron Pagoda of <unk> Temple ( Jade Springs Temple ) , <unk> , Hubei Province . Built in <unk> , it incorporates 53 @,@ <unk> kg ( 118 @,@ 715 lb ) of cast iron and stands 21 @.@ 28 m ( 69 @.@ 8 ft ) tall . <unk> contemporary wooden , stone , and brick pagodas , the pagoda features sloping eaves and an octagonal base . Another iron pagoda was constructed in 1105 , <unk> , Shandong , and was cast layer by layer in octagonal sections , standing 78 feet high . Several such cast iron pagodas exist in China today . 
 The <unk> Pagoda , or Six <unk> Pagoda , is another example of Song @-@ era pagoda architecture . It is located in the Southern Song capital of Hangzhou , in Zhejiang Province , at the foot of <unk> Hill facing the <unk> River . Although the original was destroyed in 1121 , the current tower was erected in <unk> and fully restored by 1165 . It stands 59 @.@ 89 m ( 196 @.@ 5 ft ) tall , and was constructed from a red brick frame with 13 stages of wooden eaves . Because of its size , the pagoda served as a permanent lighthouse to aid sailors at night ( as described in Hangzhou Fu <unk> ) . 
 The <unk> Temple Pagoda in <unk> County of Sichuan Province ( near <unk> ) is a brick pagoda that was built between 1023 and <unk> , according to inscriptions running along its first storey . It has a square base on a <unk> pedestal , thirteen stories totaling 28 m ( 92 ft ) in height , and multiple layers of eaves similar in style to the earlier Tang pagodas of Chang 'an , the Giant Wild Goose Pagoda and the Small Wild Goose Pagoda . 
 Wood @-@ and @-@ brick hybrid pagodas were also built . The first four floors of the octagonal , 42 m ( 138 ft ) <unk> Pagoda of <unk> are brick ( with wooden eaves ) , while from the fifth floor up it is entirely made of wood . Even pagodas made of stone or brick featured architectural elements that were typical of Chinese wooden buildings ; for example the Pizhi Pagoda , built from <unk> to 1063 , uses the dougong brackets typical of wooden architecture to hold up <unk> , <unk> roofs and tiers . Both of these pagodas feature interior staircases , although the <unk> Pagoda 's only reaches to the fourth floor , and the Pizhi Pagoda 's to the fifth . However , the Pizhi Pagoda features winding exterior stairs that provide access to the ninth and topmost floor . 
 Although the Pagoda of <unk> Temple is the tallest extant wooden pagoda , the tallest Chinese pagoda built in the dynastic era that remains standing is the <unk> Pagoda . Completed in <unk> , it is 84 meters ( 276 ft ) tall , with an octagonal base on a large platform , surpassing the 69 @-@ meter ( 226 ft ) <unk> Pagoda , which had held the record since its construction in the 9th century by the Kingdom of <unk> . Although the <unk> Pagoda served its religious purpose as a Buddhist landmark in the <unk> Monastery of <unk> County , Hebei province , its great height gave it another valuable function , as a military watch tower that was used to observe movements of the Liao enemy . Beside their utility in surveillance , pagoda towers could also serve as astronomical observatories ; one such is the <unk> Astronomical Observatory , built in <unk> and still standing today . 
 <unk> pagoda 
 
 = = Temples = = 
 
 It was not uncommon for wealthy or powerful families to facilitate the construction of large temple complexes , usually by <unk> a portion of their family estate to a Buddhist sect . Often the land already contained buildings that could be re @-@ <unk> for religions use . The Fei ( <unk> ) family of the town of <unk> , located just west of Shanghai , converted a mansion on their property into a Buddhist <unk> @-@ <unk> hall , and later built several other religious buildings around the hall . This spurred a boom in temple construction in the area , causing <unk> to become a major center of the White Lotus sect of Buddhism , which in turn spurred the construction of more temples and lead the town to become a significant location within the Song . The nearby town of <unk> gained prominence shortly after the fall of the Song in large part to the construction of temples and other religious buildings , which spanned the entire Song empire . 
 Apart from <unk> the development of urban areas , temples and religious buildings featured a number of unique aesthetic and structural features . The Temple of the Saintly Mother ( <unk> ) and the Hall of <unk> of the Jin Temple ( <unk> ) , located in a southeastern suburb of Taiyuan City , Shanxi province , are extant examples of early Song architecture . The Temple of the Saintly Mother is the main building of the Jin Temple , first built in the period between 1023 and <unk> and renovated in 1102 . It has a double @-@ <unk> roof with nine ridges , and two dragon @-@ heads with wide @-@ open jaws biting the ends of the main ridge . The roof is supported by massive dougong brackets corresponding to drawings in Yingzao Fashi . The eaves of the Temple of the Saintly Mother curve upward slightly at each end , a characteristic of Song architecture . The columns of the façade , decorated with <unk> that coil around the shafts , become progressively taller with increasing distance to either side of the central pair . The building has a porch around it , the sole example of such a structure ; another unique feature of the site is a cross @-@ shaped bridge that leads to the Goddess Temple . 
 The Trinity Hall of Xuan <unk> Temple ( <unk> ) , situated in the heart of <unk> city , is another example of Song architecture . In 1982 , it was established as a National Heritage Site by the Chinese government . 
 The Jingling Palace ( <unk> , Jingling Gong ) , a temple to the legendary Yellow Emperor located near modern @-@ day Qufu , was built in the 11th century . It was subsequently destroyed near the end of the Yuan dynasty . However , several other structures in Shou Qiu , the complex that Jingling Palace was situated in , remain intact . Two giant tortoise @-@ borne <unk> flank what was the entrance to the palace . One of the two <unk> , the <unk> of the <unk> of 10 @,@ 000 , is at 52 meters ( 171 ft ) high , the tallest unmarked stele in the country . A large pyramid constructed of rounded stone blocks , the symbolic tomb of the Yellow Emperor 's son <unk> , is located outside the Shou Qiu complex . Another important large tortoise @-@ borne stele of the same period has been preserved at the Dai <unk> of Mount Tai . 
 
 = = Bridges = = 
 
 Bridges over waterways had been known in China since the ancient Zhou dynasty . During the Song dynasty , large <unk> bridges were constructed , such as that built by Zhang <unk> in <unk> . There were also large bridges made entirely of stone , like the Ba <unk> Bridge of Shaoxing , built in <unk> and still standing today . Bridges with pavilions crowning their central spans were often featured in such paintings as the landscapes of Xia Gui ( <unk> – 1224 ) . Long , covered corridor bridges , like the 12th @-@ century Rainbow Bridge in <unk> , <unk> province , which has wide stone @-@ based piers and a wooden superstructure , were also built . 
 While serving as an administrator for Hangzhou , the poet Su Shi ( <unk> – 1101 ) had a large pedestrian causeway built across the West Lake , which still bears his name : <unk> ( <unk> ) . In 1221 , the Taoist traveler Qiu <unk> visited Genghis Khan in <unk> , describing various Chinese bridges encountered on the way there through the <unk> Shan Mountains , east of <unk> . The historian Joseph <unk> quotes him as saying : 
 [ The road had ] " no less than 48 timber bridges of such width that two carts can drive over them side by side " . It had been built by Chang Jung [ Zhang <unk> ] and the other engineers of the <unk> some years before . The wooden <unk> of Chinese bridges from the − 3rd century [ BC ] onwards were no doubt similar to those supposed to have been employed in Julius Caesar 's bridge of − 55 [ BC ] across the Rhine , or drawn by Leonardo , or found in use in Africa . But where in + 13th century [ AD ] Europe could a two @-@ lane highway like Chang Jung 's have been found ? 
 In Fujian Province , enormous beam bridges were built during the Song dynasty . Some of these were as long as 1 @,@ 220 m ( 4 @,@ 000 ft ) , with individual spans of up to 22 m ( 72 ft ) in length ; their construction necessitated moving massive stones of 203 t ( 203 @,@ 000 kg ) . No names of the engineers were recorded or appear in the inscriptions on the bridges , which give only the names of local officials who sponsored them and oversaw their construction and repair . However , there might have been an engineering school in Fujian , headed by a prominent engineer known as Cai <unk> ( 1012 – <unk> ) , who had risen to the position of governmental prefect in Fujian . Between <unk> and 1059 , he planned and supervised the construction of the large <unk> Bridge ( once called the Luoyang Bridge ) near <unk> ( on the border of the present @-@ day <unk> District and Huai 'an County . This bridge , a stone structure similar to a number of other bridges found in Fujian , still stands , and features ship @-@ like piers bound to their bases using <unk> from <unk> as an <unk> . It is 731 m ( 2 @,@ 398 ft ) in length , 5 m ( 16 ft ) in width , and 7 m ( 23 ft ) in height . Another famous bridge near <unk> , the <unk> Bridge , was constructed between 1138 and <unk> . 
 Other examples of Song bridges include <unk> Bridge , a stone arch bridge in <unk> , Zhejiang Province . The bridge was built in 1213 , the sixth year of the <unk> Era in the Southern Song dynasty . Song @-@ era <unk> bridges include the <unk> Bridge , 400 m ( 1 ⁄ 4 mi ) long , which may still be seen today . 
 
 = = <unk> of the Northern Song emperors = = 
 
 Located southwest of <unk> city in <unk> County , Henan province , the large tombs of the Northern Song number about one thousand , including individual tombs for Song emperors , <unk> , princes , <unk> , consorts , and members of the extended family . The complex extends approximately 7 km ( 4 @.@ 3 mi ) from east to west and 8 km ( 5 @.@ 0 mi ) from north to south . The construction of the complex began in <unk> AD , during the reign of the first Song ruler , Emperor <unk> of Song , whose father is also buried at the site . The only Northern Song emperors not buried there are Emperor Huizong of Song and Emperor Qinzong of Song , who died in captivity after the Jurchen invasion of northern China in 1127 . <unk> the spirit ways of the tomb complex are hundreds of Song sculptures and statues of tigers , rams , lions , horses with <unk> , horned <unk> and mythical creatures , government officials , military generals , foreign ambassadors , and others featured in an enormous display of Song @-@ era artwork . 
 The layout and style of the Song tombs resemble those found in the contemporary <unk> kingdom of the Western Xia , which also had an auxiliary burial site associated with each tomb . At the center of each burial site is a truncated pyramidal tomb , each having once been guarded by a four @-@ walled enclosure with four centered gates and four corner towers . About 100 km ( 62 mi ) from <unk> is the <unk> Tomb , which contains " elaborate <unk> in brick of Chinese timber frame construction , from door <unk> to pillars and <unk> to bracket sets , that adorn interior walls . " The <unk> Tomb has two large separate chambers with conical ceilings ; a large staircase leads down to the entrance doors of the subterranean tomb . 
 
 = = Literature = = 
 
 During the Song dynasty , previous works on architecture were brought to more sophisticated levels of description , as in <unk> <unk> , written by Li <unk> in <unk> AD . One of the most definitive works , however , was the earlier Mu Jing ( " <unk> Manual " ) , ascribed to Yu Hao and written sometime between 965 and 995 . Yu Hao was responsible for the construction of a wooden pagoda tower in Kaifeng , which was destroyed by lightning and replaced by the brick Iron Pagoda soon after . In his time , books on architecture were still considered a <unk> scholarly achievement due to the craft 's status , so Mu Jing was not even recorded in the official court bibliography . Although the book itself was lost to history , the scientist and statesman Shen <unk> wrote of Yu 's work extensively in his Dream Pool Essays of <unk> , praising it as a work of architectural genius , saying that no one in his own time could reproduce such a work . Shen <unk> singled out , among other passages , a scene in which Yu Hao gives advice to another <unk> @-@ architect about <unk> struts in order to <unk> a pagoda against the wind , and a passage in which Yu Hao describes the three sections of a building , the area above the <unk> , the area above ground , and the foundation , and then proceeds to provide proportional ratios and construction techniques for each section . 
 Several years later Li Jie ( <unk> ; 1065 – <unk> ) published Yingzao Fashi ( " <unk> on Architectural Methods " or " State Building Standards " ) . Although similar books came before it , such as <unk> <unk> ( " National Building Law " ) of the early Tang dynasty ( 618 – 907 ) , Li 's book is the earliest technical manual on Chinese architecture to have survived in full . 
 
 = = = Yingzao Fashi = = = 
 
 Yingzao Fashi is a technical treatise on architecture and craftsmanship written by Li Jie , an architect and official at the Directorate of Buildings and Construction . Li completed the book in 1100 , and presented it to Emperor <unk> of Song in the last year of his reign . His successor , Emperor Huizong of Song , had Li 's treatise officially published three years later , in 1103 , for the benefit of <unk> , architects , and literate craftsmen . The book was intended to provide standard regulations , to not only the engineering agencies of the central government , but also the many workshops and <unk> families throughout China who could benefit from using a well @-@ written government manual on building practices . 
 Yingzao Fashi included building codes and regulations , accounting information , descriptions of construction materials , and classification of crafts . In its 34 chapters , the book outlined units of measurement , and the construction of <unk> , fortifications , stonework , and woodwork . For the latter , it included specifications for making <unk> units with inclined arms and joints for columns and beams . It also provided specifications for wood carving , drilling , <unk> , bamboo work , <unk> , wall building , and decoration . The book contained recipes for decorative paints , <unk> , and coatings , also listing proportions for mixing mortars used in masonry , . brickwork , and manufacture of glazed tiles , illustrating practices and standards with drawings . His book outlined structural carpentry in great detail , providing standard dimensional measurements for all components used ; . here he developed a standard eight @-@ grade system for <unk> timber elements , known as the <unk> @-@ <unk> system of units , which could be universally applied in buildings . About 8 % of Li Jie 's book was derived from pre @-@ existing written material on architecture , while the majority of the book documented the inherited traditions of craftsmen and architects . The Yingzao Fashi provided a full <unk> of technical terms that included mathematical formulae , building proportions , and construction techniques , and discussed the implications of the local topography for construction at a particular site . He also estimated the monetary costs of hiring laborers of different skill levels from various crafts on the basis of a day 's work , in addition to the price of the materials they would need and according to the season in which they were to be employed . 
 
 = = Architecture in Song artwork = = 
 
 
 