The First Opium War (Chinese: 第一次鴉片戰爭; pinyin: Dìyīcì yāpiàn zhànzhēng), also known as the Anglo-Chinese War, was a series of military engagements fought between the British Empire and the Chinese Qing dynasty between 1839 and 1842. The immediate issue was the Chinese enforcement of their ban on the opium trade by seizing private opium stocks from mainly British merchants at Guangzhou (then named Canton) and threatening to impose the death penalty for future offenders. Despite the opium ban, the British government supported the merchants' demand for compensation for seized goods, and insisted on the principles of free trade and equal diplomatic recognition with China. Opium was Britain's single most profitable commodity trade of the 19th century. After months of tensions between the two states, the Royal Navy launched an expedition in June 1840, which ultimately defeated the Chinese using technologically superior ships and weapons by August 1842. The British then imposed the Treaty of Nanking, which forced China to increase foreign trade, give compensation, and cede Hong Kong Island to the British. Consequently, the opium trade continued in China. Twentieth-century nationalists considered 1839 the start of a century of humiliation, and many historians consider it the beginning of modern Chinese history.
Senior government officials within the country had been shown to be colluding against the imperial ban due to stocks of opium in European warehouses in clear view being ignored. In 1839, the Daoguang Emperor, rejecting proposals to legalise and tax opium, appointed Viceroy of Huguang Lin Zexu to go to Guangzhou to halt the opium trade completely. Lin wrote an open letter to Queen Victoria appealing to her moral responsibility to stop the opium trade, although she never received it. Lin then resorted to using force in the western merchants' enclave. He arrived in Guangzhou at the end of January 1839 and organized a coastal defence. In March 1839, British opium dealers were forced to hand over 1,420 tonnes (3.1 million lb) of opium. On 3 June 1839, Lin ordered the opium to be destroyed in public on Humen Beach to show the Government's determination to ban smoking. All other supplies were confiscated and a blockade of foreign ships on the Pearl River was ordered.
