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The tributary system of China (), or Cefeng system () was a network of loose international relations focused on China which facilitated trade and foreign relations by acknowledging China's predominant role in East Asia. It involved multiple relationships of trade, military force, diplomacy and ritual. The other states had to send a tributary envoy to China on schedule, who would
kowtow A kowtow is the act of deep respect shown by prostration, that is, kneeling and bowing so low as to have one's head touching the ground. In Sinospheric culture, the kowtow is the highest sign of reverence. It was widely used to show reverenc ...
to the Chinese emperor as a form of tribute, and acknowledge his superiority and precedence. The other countries followed China's formal ritual in order to keep the peace with the more powerful neighbor and be eligible for diplomatic or military help under certain conditions. Political actors within the tributary system were largely autonomous and in almost all cases virtually independent.


Definition

The term "tribute system", strictly speaking, is a Western invention. There was no equivalent term in the Chinese lexicon to describe what would be considered the "tribute system" today, nor was it envisioned as an institution or system. John King Fairbank and Teng Ssu-yu created the "tribute system" theory in a series of articles in the early 1940s to describe "a set of ideas and practices developed and perpetuated by the rulers of China over many centuries." The Fairbank model presents the tribute system as an extension of the hierarchic and nonegalitarian Confucian social order. The more Confucian the actors, the more likely they were to participate in the tributary system.


In practice

The "tribute system" is often associated with a "Confucian world order", under which neighboring states complied and participated in the "tribute system" to secure guarantees of peace, investiture, and trading opportunities. One member acknowledged another's position as superior, and the superior would bestow investiture upon them in the form of a crown, official seal, and formal robes, to confirm them as king. The practice of investing non-Chinese neighbors had been practiced since ancient times as a concrete expression of the loose reign policy. The rulers of Joseon, in particular, sought to legitimize their rule through reference to Chinese symbolic authority. On the opposite side of the tributary relationship spectrum was Japan, whose leaders could hurt their own legitimacy by identifying with Chinese authority. In these politically tricky situations, sometimes a false king was set up to receive investiture for the purposes of tribute trade. In practice, the tribute system only became formalized during the early years of the Ming dynasty. The "tribute" entailed a foreign court sending envoys and exotic products to the Chinese emperor. The emperor then gave the envoys gifts in return and permitted them to trade in China. Presenting tribute involved theatrical subordination but usually not political subordination. The political sacrifice of participating actors was simply "symbolic obeisance". Actors within the "tribute system" were virtually autonomous and carried out their own agendas despite sending tribute; as was the case with Japan, Korea, Ryukyu, and Vietnam. Chinese influence on tributary states was almost always non-interventionist in nature and tributary states "normally could expect no military assistance from Chinese armies should they be invaded". For example, when the Hongwu Emperor learned that the Vietnamese attacked Champa, he only rebuked them, and did not intervene in the
1471 Vietnamese invasion of Champa Year 1471 ( MCDLXXI) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar. Events January–December * January – Portuguese navigators João de Santarém and Pedro Escobar reach the g ...
, which resulted in the destruction of that country. Both Vietnam and Champa were tributary states. When the
Malacca sultanate The Malacca Sultanate ( ms, Kesultanan Melaka; Jawi script: ) was a Malay sultanate based in the modern-day state of Malacca, Malaysia. Conventional historical thesis marks as the founding year of the sultanate by King of Singapura, Parames ...
sent envoys to China in 1481 to inform them that while returning to Malacca in 1469 from a trip to China, the Vietnamese had attacked them, castrating the young and enslaving them, China still did not interfere with affairs in Vietnam. The Malaccans reported that Vietnam was in control of Champa and also that the Vietnamese sought to conquer Malacca, but the Malaccans did not fight back because of a lack of permission from the Chinese to engage in war. The Ming emperor scolded them, ordering the Malaccans to strike back with violent force if the Vietnamese attacked. According to a 2018 study in the ''Journal of Conflict Resolution'' covering Vietnam-China relations from 1365 to 1841, "the Vietnamese court explicitly recognized its unequal status in its relations with China through a number of institutions and norms." Due to their participation in the tributary system, Vietnamese rulers behaved as though China was not a threat and paid very little military attention to it. Rather, Vietnamese leaders were clearly more concerned with quelling chronic domestic instability and managing relations with kingdoms to their south and west."David C. Kang, et al. "War, Rebellion, and Intervention under Hierarchy: Vietnam–China Relations, 1365 to 1841." ''Journal of Conflict Resolution'' 63.4 (2019): 896-922
online
/ref> Nor were states that sent tribute forced to mimic Chinese institutions, for example in cases such as the Inner Asians, who basically ignored the trappings of Chinese government. Instead they manipulated Chinese tribute practices for their own financial benefit. The gifts doled out by the Ming emperor and the trade permits granted were of greater value than the tribute itself, so tribute states sent as many tribute missions as they could. In 1372, the Hongwu Emperor restricted tribute missions from Joseon and six other countries to just one every three years. The
Ryukyu Kingdom The Ryukyu Kingdom, Middle Chinese: , , Classical Chinese: (), Historical English names: ''Lew Chew'', ''Lewchew'', ''Luchu'', and ''Loochoo'', Historical French name: ''Liou-tchou'', Historical Dutch name: ''Lioe-kioe'' was a kingdom in the ...
was not included in this list, and sent 57 tribute missions from 1372 to 1398, an average of two tribute missions per year. Since geographical density and proximity was not an issue, regions with multiple kings such as the
Sultanate of Sulu The Sultanate of Sulu ( Tausūg: ''Kasultanan sin Sūg'', كاسولتانن سين سوڬ; Malay: ''Kesultanan Sulu''; fil, Sultanato ng Sulu; Chavacano: ''Sultanato de Sulu/Joló''; ar, سلطنة سولك) was a Muslim state that ruled ...
benefited immensely from this exchange. This also caused odd situations such as the Turpan Khanate simultaneously raiding Ming territory and offering tribute at the same time because they were eager to obtain the emperor's gifts, which were given in the hope that it might stop the raiding. Participation in a tributary relationship with a Chinese dynasty could also be predicated on cultural or civilizational motivations rather than material and monetary benefits. The Korean kingdom of Joseon did not treat the Manchu-led
Qing dynasty The Qing dynasty ( ), officially the Great Qing,, was a Manchu-led imperial dynasty of China and the last orthodox dynasty in Chinese history. It emerged from the Later Jin dynasty founded by the Jianzhou Jurchens, a Tungusic-spea ...
, which invaded Joseon and forced it to become a tributary in 1636, in the same way as the Han-led
Ming dynasty The Ming dynasty (), officially the Great Ming, was an imperial dynasty of China, ruling from 1368 to 1644 following the collapse of the Mongol-led Yuan dynasty. The Ming dynasty was the last orthodox dynasty of China ruled by the Han peo ...
. Joseon had continued to support the Ming in their wars against the Qing despite incurring military retaliation from the latter. The Manchus were viewed as barbarians by the Korean court, which, regarding itself as the new "Confucian ideological center" in place of the Ming, continued to use the Ming calendar and era names in defiance of the Qing, despite sending tribute missions. Meanwhile, Japan avoided direct contact with Qing China and instead manipulated embassies from neighboring Joseon and Ryukyu to make it falsely appear as though they came to pay tribute. Joseon Korea remained a tributary of Qing China until 1895, when the First Sino-Japanese War ended this relationship.


Rituals

The Chinese tributary system required a set of rituals from the tributary states whenever they sought relations with China as a way of regulating diplomatic relations. The main rituals generally included: *The sending of missions by tributary states to China *The tributary envoys'
kowtow A kowtow is the act of deep respect shown by prostration, that is, kneeling and bowing so low as to have one's head touching the ground. In Sinospheric culture, the kowtow is the highest sign of reverence. It was widely used to show reverenc ...
ing before the Chinese emperor as "a symbolic recognition of their inferiority" and "acknowledgment of their status of a vassal state *The presentation of tribute and receipt of the emperor's "vassals' gifts" *The investiture of the tributary state's ruler as the legitimate king of his land After the completion of the rituals, the tributary states engaged in their desired business, such as trade.


History

Tributary relations emerged during the
Tang dynasty The Tang dynasty (, ; zh, t= ), or Tang Empire, was an imperial dynasty of China that ruled from 618 to 907 AD, with an interregnum between 690 and 705. It was preceded by the Sui dynasty and followed by the Five Dynasties and Ten Kingdom ...
as Chinese rulers started perceiving foreign envoys bearing tribute as a "token of conformity to the Chinese world order". The Ming founder Hongwu Emperor adopted a maritime prohibition policy and issued tallies to "tribute-bearing" embassies for missions. Missions were subject to limits on the number of persons and items allowed.


Korea

The countries located in Korean peninsula had a long history of paying tribute to Chinese empires.
Jinhan Jinhan () was a loose confederacy of chiefdoms that existed from around the 1st century BC to the 4th century AD in the southern Korean Peninsula, to the east of the Nakdong River valley, Gyeongsang Province. Jinhan was one of the Samhan (or "T ...
and Mahan were recorded paying tribute to Jin dynasty of China from 280 AD repeatedly in the Book of Jin. Goguryeo was a tribe located in the Amnok/Yalu river basin, first mentioned with the Xuantu commandery being set up in its territory after the
fall Autumn, also known as fall in American English and Canadian English, is one of the four temperate seasons on Earth. Outside the tropics, autumn marks the transition from summer to winter, in September (Northern Hemisphere) or March ( Southe ...
of
Gojoseon Gojoseon () also called Joseon (), was the first kingdom on the Korean Peninsula. According to Korean mythology, the kingdom was established by the legendary founder named Dangun. Gojoseon possessed the most advanced culture in the Korean P ...
. It destroyed the Han commanderies and later formed a state called Goryeo together with
Buyeo Buyeo or Puyŏ ( Korean: 부여; Korean pronunciation: u.jʌ or 扶餘 ''Fúyú''), also rendered as Fuyu, was an ancient kingdom that was centered in northern Manchuria in modern-day northeast China. It is sometimes considered a Korea ...
migrants from the north. Colloquially it is still called Goguryeo to distinguish it from the later Goryeo. It expanded into the
Lelang commandery The Lelang Commandery was a commandery of the Han dynasty established after it had conquered Wiman Joseon in 108 BC and lasted until Goguryeo conquered it in 313. The Lelang Commandery extended the rule of the Four Commanderies of Han as far so ...
until its final destruction and unified the surrounding tribes, later on subjugating Silla and Baekje and briefly unifying Korea. The Records of the Three Kingdoms recorded Goguryeo sent envoys to Han dynasty with tributes to
Emperor Guangwu of Han Emperor Guangwu of Han (; 15 January 5 BC – 29 March AD 57), born Liu Xiu (), courtesy name Wenshu (), was a Chinese monarch. He served as an emperor of the Han dynasty by restoring the dynasty in AD 25, thus founding the Eastern Han (Later ...
as a principality state in 30 AD. Goguryeo continued to pay tribute to the proceeding Chinese dynasties: Jin dynasty, Northern Wei,
Northern Zhou Zhou (), known in historiography as the Northern Zhou (), was a Xianbei-led dynasty of China that lasted from 557 to 581. One of the Northern dynasties of China's Northern and Southern dynasties period, it succeeded the Western Wei dynasty a ...
and Sui dynasty,
Tang dynasty The Tang dynasty (, ; zh, t= ), or Tang Empire, was an imperial dynasty of China that ruled from 618 to 907 AD, with an interregnum between 690 and 705. It was preceded by the Sui dynasty and followed by the Five Dynasties and Ten Kingdom ...
. Baekje was first recorded to sent tribute to Northern Wei in the '' Book of Wei''. Baekje sent tribute to the Jin dynasty in 372 AD, recorded in the Book of Jin. It is recorded in the Book of Sui that after Sui dynasty's founding, Wideok of Baekje sent envoys and tributes to Emperor Wen of Sui. Later, when Sui dynasty was conquering Chen dynasty, a warship floated to
Tamna Tamna, or Tamna-guk, was a state based on Jeju Island from ancient times until it was absorbed by the Korean Joseon dynasty in 1404, following a long period of being a tributary state or autonomous administrative region of various Korean king ...
; on its way back, the ship passed by Baekje, and the King Wideok sent sufficient supplies to the crew along with an envoy to send congratulation of defeating Chen dynasty to Emperor Wen. Emperor Wen was touched and issued an imperial edict to exempt Baekje's yearly tribute. However, Baekje still sent tributes to Sui dynasty to plea for war against Goguryeo in 598 AD and 607 AD. In 614 AD, Baekje sent last tribute to Sui dynasty before Sui's fall in 619 AD. Baekje started to send tribute to
Tang dynasty The Tang dynasty (, ; zh, t= ), or Tang Empire, was an imperial dynasty of China that ruled from 618 to 907 AD, with an interregnum between 690 and 705. It was preceded by the Sui dynasty and followed by the Five Dynasties and Ten Kingdom ...
in 622 AD.
Silla Silla or Shilla (57 BCE – 935 CE) ( , Old Korean: Syera, Old Japanese: Siraki2) was a Korean kingdom located on the southern and central parts of the Korean Peninsula. Silla, along with Baekje and Goguryeo, formed the Three Kingdoms ...
was recorded sending tribute to Sui dynasty in 594 AD by the order of
Jinpyeong of Silla Jinpyeong of Silla (567? – 632, reign 579 – 632) was the 26th king of the Silla Dynasty, one of the Three Kingdoms of Korea. King Jinpyeong followed in the footsteps of his predecessor, King Jinji, by reorganizing the central ruling syste ...
, and then Silla started to send tribute yearly from 605 AD. The '' Old Book of Tang'' and '' New Book of Tang'' recorded Silla sent women (4 in total; all rejected), gold, silver among other things as tribute to Tang dynasty. The 10th - 13th centuries were marked by a power vacuum in the region, where the
Song A song is a musical composition intended to be performed by the human voice. This is often done at distinct and fixed pitches (melodies) using patterns of sound and silence. Songs contain various forms, such as those including the repetit ...
/
Southern Song The Song dynasty (; ; 960–1279) was an imperial dynasty of China that began in 960 and lasted until 1279. The dynasty was founded by Emperor Taizu of Song following his usurpation of the throne of the Later Zhou. The Song conquered the rest ...
struggled with northern invaders, who established their own Empires of Liao and Jin. Goryeos rulers called themselves "Great King" viewing themselves as the sovereigns of the Goryeo-centered world of Northeast Asia. They maintained their own Imperial style, in their setup of government institutions, administrative divisions and own tributary system. The capital of Goryeo was called "Hwando", meaning Imperial capital and emulated the Three Departments and Six Ministries administrative system of the Tang. Unlike in previous voluntary tribute relationships, Goryeo was forced to submit to the Mongols in the 13th century and paid tribute until the collapse of latter in the 14th century. Goryeo broke free from it in 1356, when it amidst the chaos of the last years of the collapsing Yuan Empire launched a surprise attack against the Mongol garrisons south of the Amnok river. As the struggle between the Northern Yuan and the Red Turban Rebellion and the Ming remained indecisive, Goryeo retained neutrality despite both sides pleading for their assistance in order to break this stalemate.Robinson, David M. “Rethinking the Late Koryŏ in an International Context.” Korean Studies, vol. 41, 2017, pp. 75–98. JSTOR, http://www.jstor.org/stable/44508440. Accessed 11 Dec. 2022. As the Ming eventually gained the upper hand Goryeo paid a enormous tribute to Ming in February 1385 consisting of five thousand horses, five hundred jin of gold, fifty thousand jin of silver and fifty thousand bolts of cotton fabric order to maintain their neutrality. Early Joseon struggled with the Ming over the tributary overlordship over the Jurchen tribes. The last remaining Jurchen vassal of Joseon, the Udege switched allegiance to Ming in the 1400s.. Joseon established friendly relations to Ming and retained them until the demise of latter. The Later Jin asked Joseon to pay tribute to them instead of Ming, which they refused on several grounds such as Joseon not wanting to hurt its relations to Ming and distaste of Joseons elites for these "barbarians". This resulted in the invasion by the Later Jin as well as the Qing, who forced Joseon to pay tribute to them. Relations between Joseon and Qing remained cold and former isolated itself from the outside world. Qing tributary suzerainity ended on April 17, 1895 with the Treaty of Shimonoseki between Qing and Japan. The newly emergent Empire of Japan started interfering in Korean affairs.


Japan

Early kings of Japan had formal diplomatic inquiries with the Jin dynasty and its subsequent successors and were appointed as "King of Wa". The Emperors of China commonly referred to the ruler of Japan a
倭寇
''wōkouwang'' (''wakuō'') meaning "King of Wa", while they themselves styled themselves as ''ōkimi'', meaning "Great King" in relation to the Chinese emperor. Internall
天皇
''tennō'' meaning "heavenly king" also used to put the ruler of Japan on the same level as the one of China. In 1404, Shogun
Ashikaga Yoshimitsu was the third '' shōgun'' of the Ashikaga shogunate, ruling from 1368 to 1394 during the Muromachi period of Japan. Yoshimitsu was Ashikaga Yoshiakira's third son but the oldest son to survive, his childhood name being Haruō (). Yoshimitsu ...
, who held most of the defacto power in Japan, accepted the title "King of Japan", despite the nominal sovereign of Japan still residing in Kyōto. Yoshimitsu was the first and only Japanese ruler in the early modern period to accept a Chinese title. During the Muromachi period Japan accepted the Ming led worldview, but this relationship ended in 1549 when Japan chose to end its recognition of China's
regional hegemony In international relations, regional hegemony is the hegemony (political, economic, or military predominance, control or influence) of one independently powerful state, known as the regional hegemon over other neighboring countries. The relationsh ...
and cancel any further tribute missions. Membership in the tributary system was a prerequisite for any economic exchange with China; in exiting the system, Japan relinquished its trade relationship with China. Under the rule of the Wanli Emperor, Ming China quickly interpreted the Japanese invasions of Korea (1592–1598) as a challenge to the Ming centered predominant worldview and order.


Thailand

Thailand Thailand ( ), historically known as Siam () and officially the Kingdom of Thailand, is a country in Southeast Asia, located at the centre of the Indochinese Peninsula, spanning , with a population of almost 70 million. The country is b ...
was subordinate to China as a vassal or tributary state from the Sui dynasty until the Taiping Rebellion of the late Qing dynasty in the mid-19th century. The Sukhothai Kingdom, the first unified Thai state, established official tributary relations with the
Yuan dynasty The Yuan dynasty (), officially the Great Yuan (; xng, , , literally "Great Yuan State"), was a Mongol-led imperial dynasty of China and a successor state to the Mongol Empire after its division. It was established by Kublai, the fift ...
during the reign of King
Ram Khamhaeng Ram Khamhaeng ( th, รามคำแหง, ) or Pho Khun Ram Khamhaeng Maharat ( th, พ่อขุนรามคำแหงมหาราช, ), also spelled Ramkhamhaeng, was the third king of the Phra Ruang Dynasty, ruling the Sukhoth ...
, and Thailand remained a tributary of China until 1853.
Wei Yuan Wei Yuan (; April23, 1794March26, 1857), born Wei Yuanda (), courtesy names Moshen () and Hanshi (), was a Chinese scholar from Shaoyang, Hunan. He moved to Yangzhou, Jiangsu in 1831, where he remained for the rest of his life. Wei obtained the ...
, the 19th century Chinese scholar, considered Thailand to be the strongest and most loyal of China's Southeast Asian tributaries, citing the time when Thailand offered to directly attack Japan to divert the Japanese in their planned invasions of Korea and the Asian mainland, as well as other acts of loyalty to the Ming dynasty. Thailand was welcoming and open to Chinese immigrants, who dominated commerce and trade, and achieved high positions in the government.


Vietnam

Vietnam was ruled by China for 1050 years. When Vietnam gained independence in 938, it became a tributary of China until 1885 when it became a protectorate of France with the Treaty of Huế (1884). The Lê dynasty (1428–1527) and Nguyễn dynasty (18021945) adopted the imperial Chinese system, with rulers declaring themselves emperors on the Confucian model and attempting to create a Vietnamese imperial tributary system while still remaining a tributary state of China.


Maritime Southeast Asia

The
Sultanate of Malacca The Malacca Sultanate ( ms, Kesultanan Melaka; Jawi script: ) was a Malay sultanate based in the modern-day state of Malacca, Malaysia. Conventional historical thesis marks as the founding year of the sultanate by King of Singapura, Paramesw ...
and the Sultanate of Brunei sent tribute to the Ming dynasty, with their first rulers personally traveling to China with the Imperial fleets.


See also

*
Emperor of China ''Huangdi'' (), translated into English as Emperor, was the superlative title held by monarchs of China who ruled various imperial regimes in Chinese history. In traditional Chinese political theory, the emperor was considered the Son of Heav ...
* List of recipients of tribute from China * List of tributary states of China *
Ming dynasty The Ming dynasty (), officially the Great Ming, was an imperial dynasty of China, ruling from 1368 to 1644 following the collapse of the Mongol-led Yuan dynasty. The Ming dynasty was the last orthodox dynasty of China ruled by the Han peo ...
* ''
Tian ''Tiān'' () is one of the oldest Chinese terms for heaven and a key concept in Chinese mythology, philosophy, and religion. During the Shang dynasty (17th―11th century BCE), the Chinese referred to their supreme god as '' Shàngdì'' (, "Lor ...
'' (" Heaven") / ''
Shangdi Shangdi (), also written simply, "Emperor" (), is the Chinese term for "Supreme Deity" or "Highest Deity" in the theology of the classical texts, especially deriving from Shang theology and finding an equivalent in the later '' Tian'' ("Heave ...
'' ("
God In monotheistic thought, God is usually viewed as the supreme being, creator, and principal object of faith. Swinburne, R.G. "God" in Honderich, Ted. (ed)''The Oxford Companion to Philosophy'', Oxford University Press, 1995. God is typically ...
") ** ''
Tianxia ''Tianxia'' (), literally meaning "(all) under Heaven", is a Chinese term for a historical Chinese cultural concept that denoted either the entire geographical world or the metaphysical realm of mortals, and later became associated with poli ...
'' ("
All Under Heaven ''Tianxia'' (), literally meaning "(all) under Heaven", is a Chinese term for a historical Chinese cultural concept that denoted either the entire geographical world or the metaphysical realm of mortals, and later became associated with polit ...
") ** '' Tian Chao (" Dynasty of Heaven") ** '' Tian Kehan'' (" Khan of Heaven") ** '' Tian Ming'' (" Mandate of Heaven") ** '' Tianzi'' (" Son of Heaven") * '' Pax Sinica'' *
Tributary state A tributary state is a term for a pre-modern state in a particular type of subordinate relationship to a more powerful state which involved the sending of a regular token of submission, or tribute, to the superior power (the suzerain). This to ...
*
Emperor at home, king abroad Emperor at home, king abroad was a system of conducting relations between states within the East Asian cultural sphere, Chinese cultural sphere. Rulers of lesser regimes would adopt the title of ''emperor'' (皇帝; or other equivalents) and/or o ...
* East Asian cultural sphere * Little China (ideology) *
Mandala (political model) ''Maṇḍala'' is a Sanskrit word meaning 'circle'. The mandala is a model for describing the patterns of diffuse political power distributed among Mueang or Kedatuan (principalities) in medieval Southeast Asian history, when local power was m ...


References


Citations


Sources

* * * * * *


Further reading

* Cohen, Warren I. . ''East Asia at the Center : Four Thousand Years of Engagement with the World.'' (New York: Columbia University Press, 2000. . * Fairbank, John K., and Ssu-yu Teng. "On the Ch'ing tributary system." ''Harvard journal of Asiatic studies'' 6.2 (1941): 135–246
online
* Kang, David C., et al. "War, Rebellion, and Intervention under Hierarchy: Vietnam–China Relations, 1365 to 1841." Journal of Conflict Resolution 63.4 (2019): 896–922
online
* Kang, David C. "International Order in Historical East Asia: Tribute and Hierarchy Beyond Sinocentrism and Eurocentrism." ''International Organization'' (2019): 1-29. DOI: https://doi.org/10.1017/S0020818319000274 * * * Swope, Kenneth M. "Deceit, Disguise, and Dependence: China, Japan, and the Future of the Tributary System, 1592–1596." ''International History Review'' 24.4 (2002): 757–782. * * Wills, John E. ''Past and Present in China's Foreign Policy: From "Tribute System" to "Peaceful Rise".'' (Portland, ME: MerwinAsia, 2010. . * Womack, Brantly. "Asymmetry and China's tributary system." ''Chinese Journal of International Politics'' 5.1 (2012): 37–54
online
* Zhang, Yongjin, and Barry Buzan. "The tributary system as international society in theory and practice." ''Chinese Journal of International Politics'' 5.1 (2012): 3-36. {{Chinese Imperial Government Chinese inventions Classical Chinese philosophy Foreign relations of Imperial China History of Imperial China History of East Asia