1840, 20 years after Daoguang, considering that opium sold by Britain was corrupting the country and people, Daoguang appointed Lin Zexu as an imperial envoy, went to the port of Guangdong Province to enforce the smoking ban, seized and destroyed opium from British businessmen in Humen, and the Sino-British Opium War broke out.
In the end, the Qing government was defeated in the Opium War and was forced to sign the first unequal treaty "treaty of nanking" in the history of China. Since then, Daoguang has been patient and muddled along without any measures to learn from the west and revitalize the dynasty. 1850, Daoguang died at the age of 68.
Some people criticized that Daoguang was the first emperor in China's 2,000-year-old imperial history to sign a treaty of humiliation and humiliation with western colonialists. Daoguang should bear the main historical responsibility for the failure of the Opium War and the signing of treaty of nanking.
Others said that the status of Daoguang in the Opium War was changed, and the command was unsuccessful, which brought shame to our country. It was really sad. But what saddens him even more is that after this vicious incident, he didn't think about it, nor did he take any measures to revitalize the dynasty. Daoguang was also nailed to the shame column of history and attacked by later generations.