The Convention of Peking reference article from the English Wikipedia on 24-Jul-2004
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Convention of Peking

Sponsorship the way you would do it
The Beijing Convention (October 18, 1860) was the result of the Second Anglo-Chinese War (Second Opium War).

The main result of the Convention was to cede the southern part of Kowloon Peninsula, south of Boundary Street and opposite (north) Hong Kong Island, in perpetuity from China to the United Kingdom.

See also: History of Hong Kong