Attract capital and people Positive economic profit is sometimes described as excess profit. The concept of accounting income is called accounting income. According to the traditional view, the accounting income refers to the difference between the realized income and the corresponding expenses. It has the following characteristics: But in order to better future, we must expand the definition of the word "profit", the economic benefits and social benefits are included, and understand that block chain itself is a social innovation of technical solutions. Planning is not only the premise and criterion of organization, command and coordination, but also closely related to the management and control activities. The plan sets the data, scales and standards for various complex management activities, which not only provide direction for control, but also provide a basis for controlling activities. Experience tells us that unplanned activities are uncontrollable and uncontrollable. Because the control itself is to correct the deviation of the deviation plan, to keep the management activities consistent with the objectives. 5. Accounting earnings depend on the reasonable proportion of income and expenses during the period. Costs that are not associated with the current period should be incurred as assets to be transferred for later periods. On the other hand, if investors think that inflation will worsen or worsen, interest rates may rise to curb inflation, and bond prices will fall. First half of the 1980 s, the United States there is a lot of huge budget deficit and trade deficit, the dollar remains strong, is the United States adopted a policy of high interest rates, which makes a lot of capital from Japan and Western Europe into the results of the United States. The trend of the dollar has been greatly influenced by interest rate factors. Interest rate decision theory