Lin Zexu, courtesy name Yuanfu, was a Chinese political philosopher and politician. He was a head of state (Viceroy), Governor General, scholar-official, and under the Daoguang Emperor of the Qing dynasty best known for his role in the First Opium War of 1839–42. He was from Fuzhou, Fujian Province. Lin's forceful opposition to the opium trade was a primary catalyst for the First Opium War. He is praised for his constant position on the "moral high ground" in his fight, but he is also blamed for a rigid approach which failed to account for the domestic and international complexities of the problem. The Emperor endorsed the hardline policies and anti-drugs movement advocated by Lin, but placed all responsibility for the resulting disastrous Opium War onto Lin.

The First Opium War, also known as the Anglo-Chinese War, was a series of military engagements fought between the British Empire and the Qing dynasty of China between 1839 and 1842. The immediate issue was the Chinese enforcement of their ban on the opium trade by seizing private opium stocks from merchants at Guangzhou 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.