185 years ago today, on April 10, 1840 (March 9, 1840 in the lunar calendar), the British Parliament held a debate on the war against China. On April 10, 1840, the House of Commons of the British Parliament passed the case of military expenditure against China and the resolution that "the losses of British businessmen in China must be compensated". A month later, the upper house of parliament unanimously passed the above bill. The 19th century was the heyday of the British Empire. After successively occupying Singapore and part of Myanmar, and invading Afghanistan and Iran, Britain stepped up its aggression against China in order to turn China into its commodity market and raw material origin. In September, 1839, after receiving the report of China's commercial supervision law on China's ban on smoking, the British government decided to send a navy to "make an expedition" to China. The big capitalists in London set up a committee attended by Chatton, a big opium dealer who fled from China, and others, which was responsible for instigating the war of aggression against China. Chambers of commerce in Manchester, London, Leeds, Liverpool, Brest and other places have written to Foreign Secretary Barmezun, demanding that force be used against China to protect their trade interests. On January 16, 1840, Queen Victoria of England made a speech in Parliament, claiming that China's smoking ban caused losses to the interests of British businessmen and affected the "dignity" of the king of England. On February 20th, Yilu and Yilu were appointed as the deputy plenipotentiary representatives for negotiations with China, and specific instructions were given on the steps of invading China. On March 19th, the British government announced the decision and intention of "expedition" to China in the House of Commons. From April 7 to 9, the parliament held a debate on the war against China. Finally, the British government decided to launch a war against China in order to meet the requirements of opium interest groups who ventured to plunder for wealth and the industrial bourgeoisie-textile interest groups who were eager to open the Chinese market.