In the process of conquering India, the British East India Company squeezed the blood and sweat of the Indian people and plundered India's countless wealth and resources. Since 1765, the company has directly mastered the financial power and tax power of Bangladesh. While plundering, their merchant nature was also brought into full play. They forced the Indian people to sell textiles, spices and other commodities to companies in the form of unequal exchange, and the companies then transshipped them to Europe and the United States to profit from them. The East India Company also forced Indian farmers to plant poppies on a large scale, and made them into opium cigarettes, which were dumped in China in large quantities, resulting in the outflow of silver in the Qing Dynasty. The opium trade of the East India Company not only exploited and poisoned the people of China, but also harmed the people of India and other Asian countries. The emergence of the "sick man of East Asia" was caused by the evil deeds of the East India Company. It is estimated that during the 58 years from 1757 to 18 15, the wealth captured by the East India Company reached more than 65,438 billion pounds. These amazing wealth are continuously transported back to Britain and transformed into capital, which accelerates the development of British capitalism.