Why did the destruction of British opium at Guangzhou increase tensions with Britain?

The destruction of British opium at Guangzhou in 1839 significantly escalated tensions between Britain and China primarily because it resulted in a massive financial loss for British merchants that the British government refused to accept and the Qing dynasty refused to compensate.1

In 1839, the Daoguang emperor appointed Lin Zexu as imperial commissioner to suppress the illegal opium trade, which had caused severe social and economic disruption in China. Lin forced Charles Elliot, the British chief superintendent of trade, to surrender the opium inventory held by British merchants. Consequently, more than 20,000 chests of opium—approximately 1,400 tons—were confiscated and destroyed.213

This action was viewed by the British as a direct assault on their commercial interests and property. Because the British government would not absorb the financial burden of this loss and the Chinese government would not provide reparations, the destruction served as a major catalyst for the First Opium War, which began later that year.1