Stan said that compound interest, the eighth wonder in the world, is the compound interest of magic spell, which is also commonly known as rolling interest. It means that every income has an interest rate, and every income generates extra income. Have you ever heard that a king rewards people who have made meritorious deeds? Gold, silver and gold particles with 54 grids are put into the particles twice. If you put 54 cubes into a grain of rice, you need 4 cubes to fill the story. Look at the compound interest effect of fixed investment of funds. The power compound interest effect fully embodies the need to meet five conditions, that is, first, you need to invest to reap the benefits of fundamental products, and then you need to transform the product principal, generate profits, and make rolling profits. Third, the cooperation between them is more effective. Fourth, the more efficient the rate of return, the more sudden it is. Fifth, we should combine the product characteristics to achieve the goal.