Lin Zexu destroys confiscated opium at Humen

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Imperial Commissioner Lin Zexu, sent to Canton to enforce the prohibition on opium, compelled the surrender of foreign opium stocks and had them destroyed at Humen over some three weeks from 3 June 1839 — on the order of twenty thousand chests, about a thousand long tons. This was enforcement of Chinese law against an illegal import. The British government treated the destruction of the merchants' property as a casus belli and dispatched a naval expedition.

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