What is overseas investment? Is it demanding? Who is better to find?

You are talking about investing in foreign countries (immigrants). Simply put, it is to invest money abroad in some projects licensed by the local government to obtain "immigration status" (generally divided into permanent residency and nationality). The requirements are mainly reflected in the capital, depending on the country of immigration. For example, there are 500,000 US dollars EB-5 investment immigration projects in the United States, and many countries such as Canada, Australia and New Zealand have similar immigration projects.