
The Canton System (1757–1842; zh, t=一口通商, p=Yīkǒu tōngshāng, j=jat1 hau2 tung1 soeng1, "Single
orttrading relations") served as a means for
Qing China
The Qing dynasty ( ), officially the Great Qing, was a Manchu-led imperial dynasty of China and an early modern empire in East Asia. The last imperial dynasty in Chinese history, the Qing dynasty was preceded by the Ming dynasty ...
to control trade with the West within its own country by focusing all trade on the southern port of Canton (now
Guangzhou
Guangzhou, Chinese postal romanization, previously romanized as Canton or Kwangchow, is the Capital city, capital and largest city of Guangdong Provinces of China, province in South China, southern China. Located on the Pearl River about nor ...
). The
protectionist
Protectionism, sometimes referred to as trade protectionism, is the economic policy of restricting imports from other countries through methods such as tariffs on imported goods, import quotas, and a variety of other government regulations. ...
policy arose in 1757 as a response to a perceived political and commercial threat from abroad on the part of successive Chinese emperors.
From the late seventeenth century onwards, Chinese merchants, known as
Hongs (), managed all trade in the port. Operating from the
Thirteen Factories located on the banks of the
Pearl River outside Canton, in 1760, by order of the Qing
Qianlong Emperor
The Qianlong Emperor (25 September 17117 February 1799), also known by his temple name Emperor Gaozong of Qing, personal name Hongli, was the fifth Emperor of China, emperor of the Qing dynasty and the fourth Qing emperor to rule over China pr ...
, they became officially sanctioned as a monopoly known as the ''
Cohong''. Thereafter Chinese merchants dealing with foreign trade ( zh, t=洋行, p=yángháng, links=no, j=joeng4 hong2; "ocean traders", i.e. "overseas traders" or "foreign traders") acted through the ''Cohong'' under the supervision of the Guangdong Customs Supervisor (), informally known as the "
Hoppo", and the
Governor-general of Guangzhou and Guangxi.
History
Origins
At the start of his reign, the
Kangxi Emperor
The Kangxi Emperor (4 May 165420 December 1722), also known by his temple name Emperor Shengzu of Qing, personal name Xuanye, was the third emperor of the Qing dynasty, and the second Qing emperor to rule over China proper. His reign of 61 ...
(r.16611722) faced a number of challenges, not the least of which was to integrate his relatively new dynasty with the Chinese
Han majority.
The
Manchu
The Manchus (; ) are a Tungusic peoples, Tungusic East Asian people, East Asian ethnic group native to Manchuria in Northeast Asia. They are an officially recognized Ethnic minorities in China, ethnic minority in China and the people from wh ...
-led Qing dynasty had only come to power in 1644, replacing the
Ming dynasty
The Ming dynasty, officially the Great Ming, was an Dynasties of China, imperial dynasty of China that ruled from 1368 to 1644, following the collapse of the Mongol Empire, Mongol-led Yuan dynasty. The Ming was the last imperial dynasty of ...
. Support for the previous rulers remained strong, particularly in the south of the country.
Kangxi twice banned all maritime trade for strategic reasons, to prevent any possible waterborne coup attempt. Several rebellions took place, including one led by Ming loyalist
Koxinga and separately the
Rebellion of the Three Feudatories, which led to the capture of
Taiwan
Taiwan, officially the Republic of China (ROC), is a country in East Asia. The main geography of Taiwan, island of Taiwan, also known as ''Formosa'', lies between the East China Sea, East and South China Seas in the northwestern Pacific Ocea ...
in 1683. Once the rebellions had been quelled, in 1684 Kangxi issued an edict:
''Hǎiguān'' (海關), Hoi Gwaan, or customs stations, were subsequently opened at
Canton,
Macau
Macau or Macao is a special administrative regions of China, special administrative region of the People's Republic of China (PRC). With a population of about people and a land area of , it is the most List of countries and dependencies by p ...
, and
Xiangshan County in Guangdong;
Fuzhou
Fuzhou is the capital of Fujian, China. The city lies between the Min River (Fujian), Min River estuary to the south and the city of Ningde to the north. Together, Fuzhou and Ningde make up the Eastern Min, Mindong linguistic and cultural regi ...
,
Nantai, and
Amoy
Xiamen,), also known as Amoy ( ; from the Zhangzhou Hokkien pronunciation, zh, c=, s=, t=, p=, poj=Ē͘-mûi, historically romanized as Amoy, is a sub-provincial city in southeastern Fujian, People's Republic of China, beside the Taiwan Stra ...
in
Fujian
Fujian is a provinces of China, province in East China, southeastern China. Fujian is bordered by Zhejiang to the north, Jiangxi to the west, Guangdong to the south, and the Taiwan Strait to the east. Its capital is Fuzhou and its largest prefe ...
;
Ningbo and
Dinghai County in
Zhejiang Province; and
Huating County, Chongque, and
Shanghai
Shanghai, Shanghainese: , Standard Chinese pronunciation: is a direct-administered municipality and the most populous urban area in China. The city is located on the Chinese shoreline on the southern estuary of the Yangtze River, with the ...
in
Jiangsu Province. One year later in 1685, foreign traders received permission to enter Chinese ports.
The Qing Court under Kangxi set up a trading company in Canton in 1686 to deal with Western trade known as the ''Yánghuò Háng'' (洋貨行, literally "Ocean Trading House"). This dealt with both imports and exports with sub-offices responsible for taxes and import/export declarations respectively. When a ship arrived or departed, the Chinese merchant involved would visit the Ocean Trading House to pay any taxes due. This set up became the basis for the later
Thirteen Factories through which all foreign trade would be conducted.
Although many ports on the coasts of China were open, most Westerners chose to trade at Canton as it is closer to Southeast Asia and it was not profitable to go further north.
In 1704, the ''Baoshang'' system was established. This system licensed trade with Western merchants: licences were granted to a number of Chinese merchants as long as they helped to collect duties from the Westerners, successfully aligning trading interests with the government's revenue collection. This was the predecessor for the later Cohong system.
Although he now had the foreign trade situation under control, Kangxi's liberal attitude towards religion led to a clash between Chinese and Christian spiritual authority. After
Pope Clement XI issued his 1715
papal bull
A papal bull is a type of public decree, letters patent, or charter issued by the pope of the Catholic Church. It is named after the leaden Seal (emblem), seal (''bulla (seal), bulla'') traditionally appended to authenticate it.
History
Papal ...
''Ex illa die'', which officially condemned Chinese religious practices, Kangxi expelled all missionaries from China except those employed in a technical or scientific advisory capacity by the Qing Court.
Implementation of the ''Cohong''
In 1745, Kangxi's grandson the
Qianlong Emperor
The Qianlong Emperor (25 September 17117 February 1799), also known by his temple name Emperor Gaozong of Qing, personal name Hongli, was the fifth Emperor of China, emperor of the Qing dynasty and the fourth Qing emperor to rule over China pr ...
ordered his court to implement changes to the Ocean Trading House system. Thereafter a local Chinese merchant stood as guarantor for every foreign trading vessel entering Canton Harbour and took full responsibility for the ship and its crew along with the captain and
supercargo. Any tax payments due from a foreign trader were also to be guaranteed by the local merchant. With permission from the authorities, in 1760 Hong merchant Pan Zhencheng (潘振成) and nine others ''hong'' specializing in the western trade joined together to become the intermediary between the Qing government and the foreign traders. The role of the new body would be to purchase goods on behalf of the foreigners and deduct any taxes and duties payable for imports and exports; at the same time, according to Guangdong customs records (粵海關志, ''jyut6 hoi2 gwaan1 zi3'', ''Yuèhǎi guān zhì''), they established a new harbour authority to deal with tribute from
Thailand
Thailand, officially the Kingdom of Thailand and historically known as Siam (the official name until 1939), is a country in Southeast Asia on the Mainland Southeast Asia, Indochinese Peninsula. With a population of almost 66 million, it spa ...
and handle pay for the troops involved in trade as well as manage domestic maritime trade in the
South China Sea
The South China Sea is a marginal sea of the Western Pacific Ocean. It is bounded in the north by South China, in the west by the Indochinese Peninsula, in the east by the islands of Taiwan island, Taiwan and northwestern Philippines (mainly Luz ...
. Henceforth, the ''Cohong'' possessed imperial authority to levy taxes on the foreign merchants as they saw fit.
Flint Affair
In 1757 the Qianlong Emperor banned all non-Russian ships from the ports of northern China. Russians were however not allowed to use Canton. All customs offices other than the one at Canton were closed. The emperor did this after receiving a petition regarding the presence of armed Western merchant ships all along the coast. The Western merchant ships were protected from pirates, and guarded against, by the Guangdong Navy, which was subsequently increased in strength.
Thereafter all such commerce was to be conducted via a single port under what became known as the Canton System (Chinese: 一口通商;
Cantonese
Cantonese is the traditional prestige variety of Yue Chinese, a Sinitic language belonging to the Sino-Tibetan language family. It originated in the city of Guangzhou (formerly known as Canton) and its surrounding Pearl River Delta. While th ...
: ''jat1 hau2 tung1 soeng1'';
Mandarin: ''Yī kǒu tōngshāng;'' literally, "Single-port commerce system"). During Qianlong's reign Qing foreign trade policies had a political aspect largely based on real or imagined threats from abroad; historian Angela Schottenhammer suggests that although the single port trading policy arose in part from lobbying by officials and Chinese merchants, it was more likely triggered by the activities of Flint in what became known as The Flint Affair (''Hóng Rènhuī Shìjiàn'', 洪任輝事件). Although the foreign merchants knew of the ''Cohong'' restriction, they had to balance a breach of etiquette against the risks of seeing their substantial investments in China destroyed by bribery and corruption. Englishman
James Flint, a long-term East India Company supercargo and a fluent speaker of Chinese, became the focus of the impetus for change. Flint had been repeatedly warned to remain in Canton during the trading season and not to venture north in search of commercial opportunities. Despite this, back in 1755 Flint, together with Company director Samuel Harrison, sailed north to explore possibilities for trade in Zhejiang. In 1759, he again journeyed north to file a complaint in Ningbo over corruption amongst the officials in Canton. He had hoped that his criticisms of the current system would usher in a new era of free trade but instead, not only did his plan to open up the ports of Zhejiang fail, the Qing authorities reacted by imposing further restrictions on foreign trade.
Worse still, Flint found himself deported to
Macau
Macau or Macao is a special administrative regions of China, special administrative region of the People's Republic of China (PRC). With a population of about people and a land area of , it is the most List of countries and dependencies by p ...
where he was imprisoned between December 1759 and November 1762.
The emperor and his officials became alarmed at this breach of normal protocol and realized that something had to be done to control the situation. The Qing court's previous laxity had effectively allowed a coterie of Chinese merchants and local officials to take over foreign commerce in the southern port according to their own best financial interests. One of the fundamental tenets of traditional Chinese diplomacy prohibited contact with Beijing except in the case of tributary envoys from other states.
The new rules, known as the ''Vigilance Towards Foreign Barbarian Regulations'' ( zh, t=, p=Fángfàn wàiyí guītiáo, links=no, j=fong4 faan6 ngoi6 ji4 kwai1 tiu4, c=防範外夷規條 ) or ''Five Counter-Measures Against the Barbarians'' ( zh, t=, p=Fáng yí wǔ shì, links=no, j=fong4 ji4 ng5 si6, c=防夷五事) contained the following provisions:
:1) Trade by foreign barbarians in Canton is prohibited during the winter.
:2) Foreign barbarians coming to the city must reside in the
foreign factories under the supervision and control of the
Cohong.
:3) Chinese citizens are barred from borrowing capital from foreign barbarians and from employment by them.
:4) Chinese citizens must not attempt to gain information on the current market situation from foreign barbarians
:5) Inbound foreign barbarian vessels must anchor in the
Whampoa Roads and await inspection by the authorities.
These rules did not apply to all Western merchants alike. Russians had nominally had an open trade route into northern China since the signing of the
Treaty of Nerchinsk in 1689, although rather than send merchant vessels, in practice they limited their activity to
caravan trade sent through Siberia and
Kyakhta, on the land border with
Outer Mongolia. The Portuguese and Spanish were still allowed to trade both in Canton and in
Xiamen
Xiamen,), also known as Amoy ( ; from the Zhangzhou Hokkien pronunciation, zh, c=, s=, t=, p=, poj=Ē͘-mûi, historically romanized as Amoy, is a sub-provincial city in southeastern Fujian, People's Republic of China, beside the Taiwan Stra ...
, although they rarely exercised the privilege of trading directly in Xiamen.
The Portuguese preferred to trade through Chinese intermediaries from Canton via their possessions in
Macao
Macau or Macao is a special administrative region of the People's Republic of China (PRC). With a population of about people and a land area of , it is the most densely populated region in the world.
Formerly a Portuguese colony, the ter ...
and, in fact, they did not maintain a factory in Canton. The Spanish traded chiefly through intermediaries belonging to the vast Chinese colony of
Manila
Manila, officially the City of Manila, is the Capital of the Philippines, capital and second-most populous city of the Philippines after Quezon City, with a population of 1,846,513 people in 2020. Located on the eastern shore of Manila Bay on ...
, which had extensive trading networks in Canton, in Fujian and in northern China, or through factories in Canton, where they had a presence since 1788.
Qianlong's single port restrictions mainly affected British traders, and those of nationalities not protected by other treaties, namely Dutch, French, American, German and Nordic traders.
Evaluation
The discovery of underground missionary activity in the late 1750s may have contributed to the Emperor's decision to concentrate foreigners in a single port. In his edict to establish the restriction, the Emperor specifically mentioned concerns about the strategic value of the interior regions to foreigners: Chinese government consultants were aware of Western military technological superiority and Westerners' record of having "set out to conquer every land they visited". The
Kangxi Emperor
The Kangxi Emperor (4 May 165420 December 1722), also known by his temple name Emperor Shengzu of Qing, personal name Xuanye, was the third emperor of the Qing dynasty, and the second Qing emperor to rule over China proper. His reign of 61 ...
, considering the Westerners to be highly successful, intrepid, clever, and profitable, already had concerns early on about the serious omnidirectional Western threat to China, if China ever became weakened.
The Canton system did not completely affect Chinese trade with the rest of the world as Chinese merchants, with their large three-masted ocean junks, were heavily involved in global trade. By sailing to and from
Siam,
Indonesia
Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania, between the Indian Ocean, Indian and Pacific Ocean, Pacific oceans. Comprising over List of islands of Indonesia, 17,000 islands, including Sumatra, ...
and
Philippines
The Philippines, officially the Republic of the Philippines, is an Archipelagic state, archipelagic country in Southeast Asia. Located in the western Pacific Ocean, it consists of List of islands of the Philippines, 7,641 islands, with a tot ...
, they were major facilitators of the global trading system; the era was even described by Carl Trocki as a "Chinese century" of global commerce.
Under the system, the Qianlong Emperor restricted trade with foreigners on Chinese soil only for licensed Chinese merchants (Cohongs), while the British government on their part issued a monopoly charter for trade only to the
British East India Company
The East India Company (EIC) was an English, and later British, joint-stock company that was founded in 1600 and dissolved in 1874. It was formed to Indian Ocean trade, trade in the Indian Ocean region, initially with the East Indies (South A ...
. This arrangement was not challenged until the 19th century when the idea of
free trade
Free trade is a trade policy that does not restrict imports or exports. In government, free trade is predominantly advocated by political parties that hold Economic liberalism, economically liberal positions, while economic nationalist politica ...
was popularised in the West. The concept of restricting trade to a single port was also used in Western countries such as
Spain
Spain, or the Kingdom of Spain, is a country in Southern Europe, Southern and Western Europe with territories in North Africa. Featuring the Punta de Tarifa, southernmost point of continental Europe, it is the largest country in Southern Eur ...
and
Portugal
Portugal, officially the Portuguese Republic, is a country on the Iberian Peninsula in Southwestern Europe. Featuring Cabo da Roca, the westernmost point in continental Europe, Portugal borders Spain to its north and east, with which it share ...
. Chinese merchants could also trade freely and legally with Westerners (Spanish and Portuguese) in
Xiamen
Xiamen,), also known as Amoy ( ; from the Zhangzhou Hokkien pronunciation, zh, c=, s=, t=, p=, poj=Ē͘-mûi, historically romanized as Amoy, is a sub-provincial city in southeastern Fujian, People's Republic of China, beside the Taiwan Stra ...
and Macao, or with any country when trade was conducted through ports outside China such as Manila and Batavia.
Although shipping was regulated, the Qianlong emperor's administration was diligent in accommodating the requisites of Western merchants. They hired a growing body of Western assistants for the Customs Office to help manage their fellow countrymen. The order to stay in Macao during the winter was lifted, tax was exempted on food, drink and basic supplies for Western merchants, and protections were granted to Westerners and their property. Chinese merchants were actually banned by Qing law from suing foreigners in Chinese courts, as the Qianlong Emperor believed that good treatment of foreigners was essential for the government. In 1806, Chinese officials compromised with the British on the murder of a Chinese man by British seamen, as Westerners refused to be punished under Chinese law, even though local citizens vigorously protested what they considered a miscarriage of justice. In 1816, the
Jiaqing Emperor dismissed a British embassy for their refusal to kowtow, but he sent them an apologetic letter with gifts (the British simply discarded them in a storeroom without reading). The Qianlong Emperor granted
Lord Macartney a golden scepter, an important symbol of peace and wealth, but this was dismissed by the British as worthless. The British, on the other hand, ignored Chinese laws and warnings not to deploy military forces in Chinese waters. The British landed troops in Macao despite a Chinese and Portuguese agreement to bar foreign forces from Macao, and then in the
War of 1812
The War of 1812 was fought by the United States and its allies against the United Kingdom of Great Britain and Ireland, United Kingdom and its allies in North America. It began when the United States United States declaration of war on the Uni ...
attacked American ships deep in the inner harbour of Canton (the Americans had previously robbed British ships in Chinese waters as well). These, in combination with the British support to Nepal during
their invasion of Tibet and later the
British invasion of Nepal after it became a Chinese tributary state, led the Chinese authorities to become highly suspicious of British intentions.
The First Opium War

A seemingly insatiable western demand for
tea
Tea is an aromatic beverage prepared by pouring hot or boiling water over cured or fresh leaves of '' Camellia sinensis'', an evergreen shrub native to East Asia which probably originated in the borderlands of south-western China and nor ...
from China towards the end of the 18th century caused a significant deficit in the British
balance of trade
Balance of trade is the difference between the monetary value of a nation's exports and imports of goods over a certain time period. Sometimes, trade in Service (economics), services is also included in the balance of trade but the official IMF d ...
. The Chinese had little interest in Western goods and would only accept
silver
Silver is a chemical element; it has Symbol (chemistry), symbol Ag () and atomic number 47. A soft, whitish-gray, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. ...
in payment. This spurred the
East India Company
The East India Company (EIC) was an English, and later British, joint-stock company that was founded in 1600 and dissolved in 1874. It was formed to Indian Ocean trade, trade in the Indian Ocean region, initially with the East Indies (South A ...
to sell
opium
Opium (also known as poppy tears, or Lachryma papaveris) is the dried latex obtained from the seed Capsule (fruit), capsules of the opium poppy ''Papaver somniferum''. Approximately 12 percent of opium is made up of the analgesic alkaloid mor ...
grown on its plantations in India to independent traders, who shipped it on to China to sell in exchange for silver, despite the fact that opium was already illegal in China. China tried to stop the importation of this opium, but the traders persisted. Chinese attempts to regain control led to the
First Opium War, when British
gunboat diplomacy
Gunboat diplomacy is the pursuit of foreign policy objectives with the aid of conspicuous displays of naval power, implying or constituting a direct threat of warfare should terms not be agreeable to the superior force.
The term originated in ...
quickly forced China to sign the treaty of Nanjing that gave Hong Kong to the British along with allowing free trade to British merchants in China. Additionally China was forced to pay reparations for the destroyed opium.
Abolition
Following the signature of the 1842
Treaty of Nanking
The Treaty of Nanking was the peace treaty which ended the First Opium War (1839–1842) between United Kingdom of Great Britain and Ireland, Great Britain and the Qing dynasty of China on 29 August 1842. It was the first of what the Chinese ...
, British subjects are "allowed to reside, for the purpose of carrying on their mercantile pursuits, without molestation or restraint" at Canton,
Shanghai
Shanghai, Shanghainese: , Standard Chinese pronunciation: is a direct-administered municipality and the most populous urban area in China. The city is located on the Chinese shoreline on the southern estuary of the Yangtze River, with the ...
,
Amoy
Xiamen,), also known as Amoy ( ; from the Zhangzhou Hokkien pronunciation, zh, c=, s=, t=, p=, poj=Ē͘-mûi, historically romanized as Amoy, is a sub-provincial city in southeastern Fujian, People's Republic of China, beside the Taiwan Stra ...
(Xiamen),
Ningbo and
Fuzhou
Fuzhou is the capital of Fujian, China. The city lies between the Min River (Fujian), Min River estuary to the south and the city of Ningde to the north. Together, Fuzhou and Ningde make up the Eastern Min, Mindong linguistic and cultural regi ...
. In addition, Article V of the Treaty specifically abolishes the Canton system, allowing British merchants, and eventually all foreign merchants, to deal with whomever they please in the newly opened ports.
In 1859 Canton's trade moved to a new site on the reclaimed sandbank of
Shameen Island, a short distance west of the former factories. By then much of the foreign trade with China had shifted to the by then British colony of
Hong Kong
Hong Kong)., Legally Hong Kong, China in international treaties and organizations. is a special administrative region of China. With 7.5 million residents in a territory, Hong Kong is the fourth most densely populated region in the wor ...
(acquired under the Treaty of Nanking), and to the northern ports, with their advantage of proximity to
Beijing
Beijing, Chinese postal romanization, previously romanized as Peking, is the capital city of China. With more than 22 million residents, it is the world's List of national capitals by population, most populous national capital city as well as ...
as well as the
Grand Canal and the
Yellow River
The Yellow River, also known as Huanghe, is the second-longest river in China and the List of rivers by length, sixth-longest river system on Earth, with an estimated length of and a Drainage basin, watershed of . Beginning in the Bayan H ...
, both vital arteries in the internal trade of Qing China. By 1866, only 18 foreign firms still had offices in Canton, while there were only 60 foreign residents, excluding British Indians and
tidewaiters (who boarded boats as part of custom's inspections) employed by
Sir Robert Hart's Imperial Maritime Customs Service
The Chinese Maritime Customs Service was a Chinese governmental tax collection agency and information service from its founding in 1854 until it split in 1949 into services operating in the Republic of China on Taiwan, and in the People's Republ ...
.
Legacy
The Massachusetts General Hospital, McLean Hospital, the Boston Athenæum, the Bunker Hill Monuments, public libraries, and an orphanage were built with the proceeds of opium smuggling.
By the time
Hong Kong
Hong Kong)., Legally Hong Kong, China in international treaties and organizations. is a special administrative region of China. With 7.5 million residents in a territory, Hong Kong is the fourth most densely populated region in the wor ...
became a full-fledged
British colony, many of the merchants would be led by a newer generation of western
hong merchants. Many of these companies would become the backbone of the young
Hong Kong economy.
See also
*
Century of humiliation
The century of humiliation was a period in Chinese history beginning with the First Opium War (1839–1842), and ending in 1945 with China (then the Republic of China) emerging out of the Second World War as one of the Big Four and establishe ...
*
Economic history of China before 1912
*
Old China Trade
*
Hongs
*
Howqua
Wu Bingjian (; 17694 September 1843), trading as "Houqua" and better known in the West as "Howqua" or "Howqua II", was a hong merchant in the Thirteen Factories, head of the '' E-wo hong'' and leader of the Canton Cohong. He was once the rich ...
*
Thirteen Factories
*
Wu Tingju
Notes and references
Notes
Bibliography
*
*
*
*
*
*
*
*
*
*
Further reading
* Louis Dermigny, ''La Chine et l'Occident: le commerce à Canton au XVIIIe siècle, 1719–1833''. Paris: SEVPEN, 1964.
*
* Liu Yong, ''The Dutch East India Company's Tea Trade with China, 1757–1781''. Leiden and Boston: Brill, 2007.
* Hoh-Cheung Mui and H. Lorna Mui, ''The Management of Monopoly: A Study of the East India Company's Conduct of Its Tea Trade, 1784–1833''. Vancouver: University of British Columbia Press, 1984.
*
* Paul Arthur Van Dyke. ''The Canton Trade: Life and Enterprise on the China Coast, 1700–1845''. Hong Kong University Press, 2005. .
* Paul Arthur Van Dyke. ''Merchants of Canton and Macao: Politics and Strategies in Eighteenth-Century Chinese Trade''. Hong Kong University Press.2011.
* Zhuang Guotu, ''Tea, Silver, Opium, and War: The International Tea Trade and Western Commercial Expansion into China in 1740–1840''. Xiamen: Xiamen University Press, 1993.
{{Qing dynasty topics
Economy of the Qing dynasty
History of Guangzhou
History of foreign trade in China