Investment refers to the process by which a state or an enterprise, or an individual, enters into an agreement with a counterparty for the purpose of promoting the development of a society and realizing mutual benefits, as well as transferring funds. It is also an economic behavior in which a specific economic entity invests a sufficient amount of money or the monetary equivalent of a physical object in a certain area for a certain period of time in order to obtain a return or increase the value of the funds in a foreseeable period of time in the future. It can be categorized into investment in kind, capital investment and portfolio investment. The former is the currency into the enterprise, through production and operation activities to obtain a certain profit, the latter is the currency to buy shares and bonds issued by the enterprise, indirectly involved in the enterprise's profit distribution.