Treaty of Nanjing

The Treaty of Nanjing (南京条约), concluded on 29 August 1842 aboard HMS Cornwallis on the Yangzi River, terminated the First Opium War (1839–1842) between Great Britain and the Qing Empire. It was negotiated for Britain by Sir Henry Pottinger and signed for the Qing court by the imperial commissioners Qiying (Kiying) and Ilibu, following the British fleet's seizure of Zhenjiang and its threat to Nanjing. Ratifications were exchanged at Hong Kong on 26 June 1843. The treaty is universally identified in Chinese historiography as the first of the bupingdeng tiaoyue — the "unequal treaties" — and is conventionally taken to mark the opening of China's "century of humiliation" (百年国耻), running from 1842 to the founding of the People's Republic in 1949.

Its principal stipulations were territorial, commercial and financial. Article III ceded Hong Kong Island to Britain "in perpetuity," establishing a Crown colony that endured until the 1997 handover. Article II opened five treaty ports — Canton (Guangzhou), Amoy (Xiamen), Foochow (Fuzhou), Ningpo (Ningbo) and Shanghai — to British residence and trade, abolishing the Canton System and its Cohong monopoly (Article V). China agreed to pay an indemnity of 21 million silver dollars — six million for the destroyed opium, three million for Hong merchants' debts and twelve million for war costs. Article X fixed a "fair and regular" tariff, effectively stripping China of tariff autonomy. Significantly, the treaty itself did not legalise opium nor grant extraterritoriality; those came through the supplementary Treaty of the Bogue (Humen) of 8 October 1843, which conferred consular jurisdiction and, critically, the most-favoured-nation clause, allowing Britain to claim any privilege granted to another power.

The Nanjing settlement set a template swiftly emulated. The United States obtained equivalent terms in the Treaty of Wanghia (3 July 1844) and France in the Treaty of Whampoa (24 October 1844), each importing the most-favoured-nation principle so that concessions multiplied across powers. Dissatisfaction with limited market access, together with the Arrow incident, propelled Britain and France into the Second Opium War (1856–1860), producing the Treaties of Tianjin (1858) and the Convention of Peking (1860). The Nanjing framework of fixed tariffs, treaty ports, indemnities and extraterritoriality persisted until the abolition of extraterritoriality by Sino-British and Sino-American treaties in 1943, while Hong Kong reverted to Chinese sovereignty only on 1 July 1997.

For the examination, the Treaty of Nanjing is a high-frequency topic in modern-Chinese-history and world-history papers, and in international-relations sections testing the genesis of treaty-port imperialism. UPSC and CSS candidates encounter it within the decline of the Qing and the roots of Chinese nationalism; China's Guokao tests it as the inaugural unequal treaty and the start of semi-colonial status. Typical question angles require distinguishing what Nanjing itself granted (Hong Kong, five ports, indemnity, tariff control) from the supplementary Bogue Treaty (extraterritoriality, most-favoured-nation), pairing it with Wanghia and Whampoa, and explaining its causal link to the "century of humiliation" narrative that legitimises modern Chinese foreign-policy assertiveness.