Tributary system of China

Summary

The tributary system of China (simplified Chinese: 中华朝贡体系; traditional Chinese: 中華朝貢體系; pinyin: Zhōnghuá cháogòng tǐxì), or Cefeng system (simplified Chinese: 册封体制; traditional Chinese: 冊封體制; pinyin: Cèfēng tǐzhì) at its height was a network of loose international relations centered around China which facilitated trade and foreign relations by acknowledging China's hegemonic role within a Sinocentric world order. 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 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.[1]

A mural from the Qianling Mausoleum in Shaanxi, 706. Foreign ambassadors are being received at court. The bald man in the middle is from the West and the man to his right is from Silla.

Many historians describe a system that embodied a collection of institutions, social and diplomatic conventions, and institutions that dominated China's contacts with the non-Chinese world for two millennia, until the collapse of the system around the end of the 19th century.[2] Other scholars like Odd Arne Westad see a group of relationships that were different in character, not an overall "tributary system". Instead, it makes sense to talk of a Sinocentric system, in which Chinese culture was central to the self-identification of many elite groups in the surrounding Asian countries.[3] By the late 19th century, China had become part of a European-style community of sovereign states[4] and established official diplomatic relations with other countries in the world following international law.

Some scholars have suggested that the tributary system is a model for understanding international relations in East Asia today, while others argue that the concept is misleading both about relations in early modern times and today.[5]

Definition edit

 
Envoys from Baekje, Goguryeo, and Silla. Painting produced 7th century AD by Yan Liben (c. 600–673).

The term "tribute system" 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.[6]

 
The Portraits of Periodical Offering of Liang. 6th-century painting in National Museum of China. Tributary envoys from right to left: Uar (Hephthalites); Persia; Baekje (Korea); Qiuci; Wo (Japan); Langkasuka (in present-day Malaysia); Dengzhi (鄧至) (Qiang) Ngawa; Zhouguke (周古柯), Hebatan (呵跋檀), Humidan (胡密丹), Baiti (白題, similar to the Hephthalite people), who dwell close to Hephthalite; Mo (Qiemo). Attributed to Xiao Yi.[7]

In practice edit

 
A Ming-era painting of a tribute giraffe, which was thought to be a Qilin by court officials, from Bengal

Legitimacy edit

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.[8] 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.[9] The practice of investing non-Chinese neighbors had been practiced since ancient times as a concrete expression of the loose reign policy.[10]

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.[11] In these politically tricky situations, sometimes a false king was set up to receive investiture for the purposes of tribute trade.[12]

Autonomy edit

In practice, the tribute system only became formalized during the early years of the Ming dynasty.[13] 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.[14] 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".[15][16]

Tribute edit

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".[13] 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.[17]

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 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 benefited immensely from this exchange.[12]

After 1435, the Ming dynasty urged foreign delegations to leave and stopped offering transport assistance for visiting missions. The size of delegations was restricted from hundreds of people to less than a dozen and the frequency of tributary missions was also reduced.[18]

The practice of giving gifts of greater value than the tribute itself was not practiced by the Mongol-led Yuan dynasty court with Goryeo. Gifts conferred by the Yuan were worth a fraction of the tribute offered by Goryeo.[19]

Culture edit

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, which invaded Joseon and forced it to become a tributary in 1636, in the same way as the Han-led Ming dynasty. 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.[20]

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.[21] Joseon Korea remained a tributary of Qing China until 1895, when the First Sino-Japanese War ended this relationship.

Rituals edit

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.[22] The main rituals generally included:

  • The sending of missions by tributary states to China[22]
  • The tributary envoys' kowtowing before the Chinese emperor as "a symbolic recognition of their inferiority" and "acknowledgment of their status of a vassal state"[22]
  • The presentation of tribute and receipt of the emperor's "vassals' gifts"[22]
  • The investiture of the tributary state's ruler as the legitimate king of his land[22]

After the completion of the rituals, the tributary states engaged in their desired business, such as trade.[22]

History edit

 
Kyrgyz deliver a white horse as a tribute to the Qianlong Emperor of China (1757), soon after the Qing conquest of Xinjiang. Soon, intensive trade started in Kulja and Chuguchak, Kyrgyz horses, sheep and goats being traded for Chinese silk and cotton fabrics.[23]

Tributary relations emerged during the Tang dynasty as Chinese rulers started perceiving foreign envoys bearing tribute as a "token of conformity to the Chinese world order".[24]

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.[25]

Korea edit

The Old Book of Tang and New Book of Tang recorded Silla sending women, 4 in total, all rejected,[26] gold, silver among other things as tribute to the Tang dynasty.[27][28]

If Silla indeed served China wholeheartedly by dispatching tributary ships one after another, why did King Beopheung use his own reign title? This is indeed confusing! From then on, Silla maintained this erroneous practice for many more years, even after Emperor Taizong had learned about it and reproved the Silla ambassador. Now, they eventually adopted the Tang reign title. Although a move out of necessity, we may still say that they have been able to correct their mistake[29]

— Kim Bu-sik (1075–1151) writing on the nature of Silla's tributary relationship with China

Goryeo's 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.[30]

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. As the Ming eventually gained the upper hand Goryeo paid an 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.[31]

Japan edit

Early kings of Japan had formal diplomatic inquiries with the Jin dynasty and its successors and were appointed as "King of Wa". The Emperors of China commonly referred to the ruler of Japan as 倭寇王 wōkouwang (wakuō) meaning "King of Wa", while they themselves styled themselves as ōkimi, meaning "Great King" in relation to the Chinese emperor. Internally 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, who held most of the de facto 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.[32] During the Muromachi period Japan accepted the Ming led worldview. This relationship ended in 1549 when Japan chose to end its recognition of China's regional hegemony and cancel any further tribute missions.[33]

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.[34] 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.[35]

Thailand edit

Thailand was an important Chinese tributary state from the Sui dynasty (581–618), until the Taiping Rebellion of the late Qing dynasty during the mid-19th century.[36] The Sukhothai Kingdom, the first unified Thai state, established official tributary relations with the Yuan dynasty during the reign of King Ram Khamhaeng, and Thailand remained a tributary of China until 1853.[37]

Wei Yuan, 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.[38] Thailand was welcoming and open to Chinese immigrants, who dominated commerce and trade, and achieved high positions in the government.[39]

Vietnam edit

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 (1802–1945) 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.[40]

Even though Vietnam was the only sinicized country in Southeast Asia, the Ming dynasty treated it with less respect than Korea or the Ryukyu Kingdom.[41] The Hongwu Emperor was firmly opposed to military expeditions in Southeast Asia and only rebuked Vietnam's conquest of Champa, which had sent tribute missions to China seeking help. After the death of Emperor Hongwu, the Chinese intervened after a Vietnamese general, Le Qui Ly, usurped the Vietnamese throne.[42]

The Malacca sultanate sent envoys to China to inform them that while returning to Malacca in 1469 from a trip to China, their ship had been driven by a storm to the coast of Vietnam and the Vietnamese killed, enslaved and castrated the survivors. The Malaccans reported that Vietnam was in control of Champa and 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. Malacca avoided reciprocating hostilities until they received a letter from the Ming dynasty, in which the Ming emperor scolded them, ordering the Malaccans to raise soldiers and retaliate if the Vietnamese attacked.[43]

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."[44]

Ryukyu Kingdom edit

From the late 14th to early 16th centuries, the Ryukyu Kingdom served an important position in the Ming's tributary order, as they became a key intermediary for the Ming's trade with Northeast and Southeast Asia through goods funnelled into Ming-Ryukyu tribute missions. Ryukyu's intermediary role was also facilitated by Chinese diaspora communities who settled in Ryukyu and served positions in the Ryukyu court.[45]

Maritime Southeast Asia edit

The Sultanate of Malacca and the Sultanate of Brunei sent tribute to the Ming dynasty, with their first rulers personally traveling to China with the Imperial fleets.[46][47]

In the Philippine islands, trade with China is believed to have begun during the Tang dynasty, and expanded during the Song dynasty;[48] by the second millennium AD, some polities were part of the tributary system of China,[49]: 177–178  between them the Sultanate of Sulu.[50]

See also edit

References edit

Citations edit

  1. ^ ChuLiu 1994, p. 177.
  2. ^ Zhang, Yongjin, "The Tribute System", Oxford Bibliographies, retrieved September 27, 2023
  3. ^ Westad (2012), p. 10.
  4. ^ Rowe, William (2010). China's Last Empire - The Great Qing. Harvard University Press. p. 211. ISBN 9780674054554. Retrieved September 27, 2023.
  5. ^ Perdue (2015), p. 1002.
  6. ^ Lee 2017, pp. 28–29.
  7. ^ Zhou 2009, p. 154.
  8. ^ Lee 2017, p. 9.
  9. ^ Lee 2017, p. 13.
  10. ^ Lee 2017, p. 33.
  11. ^ Lee 2017, p. 3.
  12. ^ a b Smits 2019, p. 65.
  13. ^ a b Lee 2017, p. 12.
  14. ^ Lee 2017, p. 15-16.
  15. ^ Smits 2019, p. 35.
  16. ^ de Klundert 2013, p. 176.
  17. ^ Lee 2017, p. 17.
  18. ^ Siu 2023, p. 7-12.
  19. ^ Robinson 2009, p. 48.
  20. ^ Lee 2017, p. 23.
  21. ^ Lee 2017, p. 24.
  22. ^ a b c d e f Khong, Y. F. (2013). "The American Tributary System". The Chinese Journal of International Politics. 6 (1): 1–47. doi:10.1093/cjip/pot002. ISSN 1750-8916.
  23. ^ Millward, James A. (2007), Eurasian crossroads: a history of Xinjiang, Columbia University Press, pp. 45–47, ISBN 978-0231139243
  24. ^ Lee 2017, p. 18.
  25. ^ 2014, p. 19.
  26. ^ Bielenstein 2005, p. 142.
  27. ^ "199". Old Book of Tang. 新罗国...武德四年,遣使朝贡...贞观五年,遣使献女乐二人,皆鬒发美色...开元十六年,遣使来献方物,又上表请令人就中国学问经教,上许之...大历二年,宪英卒,国人立其子干运为王,仍遣其大臣金隐居奉表入朝,贡方物,请加册命...八年,遣使来朝,并献金、银、牛黄、鱼牙纳朝霞䌷等。九年至十二年,比岁遣使来朝,或一岁再至...元和四年,遣使金陆珍等来朝贡。五年,王子金宪章来朝贡...十五年十一月,遣使朝贡...长庆二年十二月,遣使金柱弼朝贡。
  28. ^ "199". New Book of Tang. 新罗国...贞观五年,献女乐二...玄宗开元中,数入朝,献果下马、朝霞䌷、鱼牙䌷、海豹皮。又献二女。
  29. ^ Wang 2013, p. 96.
  30. ^ Breuker, Remco E. (2010), Establishing a Pluralist Society in Medieval Korea, 918-1170: History, Ideology and Identity in the Koryŏ Dynasty, BRILL, ISBN 9789004183254
  31. ^ Robinson, David M. “Rethinking the Late Koryŏ in an International Context.” Korean Studies, vol. 41, 2017, pp. 75–98. JSTOR, JSTOR 44508440. Accessed 11 Dec. 2022.
  32. ^ Lee 2017, p. 19.
  33. ^ Howe, Christopher. The Origins of Japanese Trade Supremacy: Development and Technology in Asia. p. 337
  34. ^ Fogel, Tributary system of China, p. 27, at Google Books; Goodrich, Luther Carrington et al. (1976). Dictionary of Ming biography, 1368–1644,, p. 1316, at Google Books; note: the economic benefit of the Sinocentric tribute system was profitable trade. The tally trade (kangō bōeki or kanhe maoyi in Chinese) was a system devised and monitored by the Chinese – see Nussbaum, Louis Frédéric et al. (2005). Japan Encyclopedia, p. 471.
  35. ^ Swope, Kenneth. "Beyond Turtleboats: Siege Accounts from Hideyoshi's Second Invasion of Korea, 1597–1598" (PDF). Sungkyun Journal of East Asian Studies: 761. Archived from the original (PDF) on 2013-11-03. Retrieved 2013-09-07. At this point in 1593, the war entered a stalemate during which intrigues and negotiations failed to produce a settlement. As the suzerain of Joseon Korea, Ming China exercised tight control over the Koreans during the war. At the same time, Ming China negotiated bilaterally with Japan while often ignoring the wishes of the Korean government.
  36. ^ Gambe, Annabelle R. (2000). Overseas Chinese Entrepreneurship and Capitalist Development in Southeast Asia. LIT Verlag Münster. p. 99. ISBN 9783825843861. Retrieved 19 July 2016.
  37. ^ Chinvanno, Anuson (1992-06-18). Thailand's Policies towards China, 1949–54. Springer. p. 24. ISBN 9781349124305. Retrieved 19 July 2016.
  38. ^ Leonard, Jane Kate (1984). Wei Yuan and China's Rediscovery of the Maritime World. Harvard Univ Asia Center. pp. 137–138. ISBN 9780674948556. Retrieved 19 July 2016.
  39. ^ Gambe, Annabelle R. (2000). Overseas Chinese Entrepreneurship and Capitalist Development in Southeast Asia. LIT Verlag Münster. pp. 100–101. ISBN 9783825843861. Retrieved 19 July 2016.
  40. ^ Alexander Woodside (1971). Vietnam and the Chinese model: a comparative study of Vietnamese and Chinese government in the first half of the nineteenth century (reprint, illustrated ed.). Harvard Univ Asia Center. p. 234. ISBN 0-674-93721-X. Retrieved June 20, 2011.
  41. ^ Dreyer, Edward L. (1982). Early Ming China : A political history, 1355-1435. Stanford University Press. ISBN 978-0-8047-1105-0.
  42. ^ Edward L. Dreyer (1982). Early Ming China: a political history, 1355-1435. Stanford University Press. p. 117. ISBN 0-8047-1105-4. Retrieved 2010-11-28.
  43. ^ Royal Asiatic Society of Great Britain and Ireland. Straits Branch, Reinhold Rost (1887). Miscellaneous papers relating to Indo-China: reprinted for the Straits Branch of the Royal Asiatic Society from Dalrymple's "Oriental Repertory," and the "Asiatic Researches" and "Journal" of the Asiatic Society of Bengal, Volume 1. Trübner & Co. p. 252. Retrieved 2011-01-09.
  44. ^ 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
  45. ^ Geoff Wade (July 2007). "Ryukyu in the Ming Reign Annals 1380s-1580s". Asia Research Institute. Working Paper Series No. 93: 13–31.
  46. ^ Anthony Reid (2010). Imperial Alchemy: Nationalism and Political Identity in Southeast Asia. Cambridge University Press. p. 51. ISBN 978-0521872379.
  47. ^ Marie-Sybille de Vienne (2015). Brunei: From the Age of Commerce to the 21st Century. NUS Press. pp. 41–44. ISBN 978-9971698188.
  48. ^ Glover, Ian; Bellwood, Peter, eds. (2004). Southeast Asia: From Prehistory to History. London, England: RoutledgeCurzon. p. 267. ISBN 978-0-415-29777-6.
  49. ^ Scott, William Henry (1994). Barangay: Sixteenth-century Philippine Culture and Society. Quezon City, Philippines: Ateneo de Manila University Press. ISBN 978-971-550-135-4. Archived from the original on February 3, 2024. Retrieved October 18, 2015.
  50. ^ Shambaugh, David L. et al. (2008). International Relations of Asia, p. 54 n15., p. 54, at Google Books citing the 1818 Collected Statutes of the Qing Dynasty (DaQing hui-tien)

Sources edit

  • Bielenstein, Hans (2005), Diplomacy and Trade in the Chinese World, 589-1276, Brill, ISBN 978-90-474-0761-4
  • Chu, Samuel C.; Liu, K.C., eds. (1994), Li Hung-Chang and China's Early Modernization, Routledge, ISBN 1563242427
  • de Klundert, Theo van (2013), Capitalism and Democracy: A Fragile Alliance, Edward Elgar Publishing Limited
  • Lee, Ji-Young (2017), China's Hegemony: Four Hundred Years of East Asian Domination, Columbia University Press
  • Fairbank, John King, ed. (1968). The Chinese World Order; Traditional China's Foreign Relations. Cambridge: Harvard University Press.
  • Perdue, Peter C. (2015). "The Tenacious Tributary System". Journal of Contemporary China. 24 (96): 1002–1014. doi:10.1080/10670564.2015.1030949. S2CID 142685195.
  • Smits, Gregory (1999), Visions of Ryukyu: identity and ideology in early-modern thought and politics, Honolulu, HI: University of Hawaii Press, ISBN 0-8248-2037-1, retrieved June 20, 2011
  • Robinson, David M. (2009). Empire's Twilight: Northeast Asia Under the Mongols. Harvard University Press. p. 49. ISBN 9780674036086. Retrieved 8 June 2019.
  • Siu, Yiu (2023), "The Cessation of Zheng He's Voyages and the Beginning of Private Sailings: Fiscal Competition between Emperors and Bureaucrats", Journal of Chinese History, 8: 95–114, doi:10.1017/jch.2022.45, S2CID 258586977
  • Westad, Odd Arne (2012). Restless Empire: China and the World since 1750. New York: Basic Books. ISBN 9780465019335.

Further reading edit

  • Cohen, Warren I. . East Asia at the Center : Four Thousand Years of Engagement with the World. New York: Columbia University Press, 2000. ISBN 0231101082.
  • Fairbank, John K.; Teng, S.Y. (1941). "On the Ch'ing Tributary System". Harvard Journal of Asiatic Studies. 6 (2): 135–246. doi:10.2307/2718006. JSTOR 2718006.
  • 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
  • Song, Nianshen (Summer 2012). "'Tributary' from a Multilateral and Multilayered Perspective". Chinese Journal of International Politics. 5 (2): 155–182. doi:10.1093/cjip/pos005. Retrieved 11 July 2016.
  • Smits, Gregory (2019), Maritime Ryukyu, 1050-1650, University of Hawaii Press
  • 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.
  • Wang, Zhenping (2013), Tang China in Multi-Polar Asia: A History of Diplomacy and War, University of Hawaii Press
  • Wills, John E. Past and Present in China's Foreign Policy: From "Tribute System" to "Peaceful Rise". Portland, ME: MerwinAsia, 2010. ISBN 9781878282873.
  • 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.
  • Zhou, Xiuqin (2009), Zhaoling: The Mausoleum of Emperor Tang Taizong, Sino-Platonic Papers