Owing to the overflow of opium smuggling, balance of China's international revenues and expenditures was broken, which directly resulted in quantities of silver outflow.
There is deep social and cultural background for it that China fell the greatest victim of the criminal opium smuggling by the British imperialists in modern history.
Based on the principle of Christian moral, their main points were that, opium as a poison caused grievously moral and social problems in China, and opium smuggling traffic violated Chinese laws.
In the relation as relying on and complement each other between the East India Company and the Country traders, with the development of the trade, the interests conflicts of them are in constant upgrading too, move towards break of relation finally.
The period during the emperor Jiaqing and Daoguang was a particular time in Chinese history, the contend between China and the West counteries for control of the South China Sea became incandescent, the navy of Guangdong took on the duties of exterminating pirates, forbidding the opium and resisting aggression.