The principle of rational investment: investment in securities investment in analysis and comparison. t is more difficult to improve ability than to master knowledge. Profitability is dependent on ability, not knowledge, so you should understand why I say the ability to learn is the equivalent of trading profit. Ability can be divided into: the ability of market analysis, understanding of market performance ability, ability to sense the state of the market, the impact factors of market leading identification ability, reading ability in the subject matter of the charts, operation planning skills, and ability to execute. Any knowledge can be translated into its own ability only through its own concrete practice. At this stage, it is important to remain open and objective, and that is the principle that you can continue to learn and progress. The futures market moves forward through breaking rules rather than building market rules. This is an important feature of futures markets that are different from other markets. The futures market can only develop by maintaining uncertainty, rather than forming operation rules. Futures market is one of the most interesting feature is: the same information or trading tools on people who have different produce strange reaction, the same information or tools do not have uniqueness and correctness or authority, so, for trading, understanding of information and trading tool use is more important than the master information and tools themselves. Having a large amount of information and buying a large number of trading models will not help your analysis and trading profitability. The key is to see your understanding and application skills. Martin Nettleton adds: “We invested in the campaign to target those larger installation and distribution companies increasingly dissatisfied with the big fabricators who are starting to compete with them by setting up their own networks of trade counters and distribution outlets. In the early 20th century, famous American economist elvin fisher developed the theory of economic gain. In its book "the nature of capital and yield", first, the concept of yield is analyzed in terms of the performance of earnings, and three different types of benefits are proposed: Mooney and si prowse in its around the main accounting principles for enterprises ", not only emphasize to determine profits in a timely manner, and emphasizes the necessary through division operating earnings, the gains and the impact of price changes, to improve the comparability of financial statements and understandability. Mark carney, governor of the bank of England, is ahead of the finance committee meeting