In 1937, American economist Robert coase (R. H. Coase's publication of the essence of the enterprise is considered to be the beginning of a discussion on this issue. Brexit offers a chance to "reshape the structure of the UK economy", but the impact of regulatory barriers could hurt carmakers and the financial sector. First, choose a trading option. Trading options are eclectic, consulting, researching, or following acquaintances, all of which are ways to select specific trading items. Which method is better because of the difference between man and man. Of course, there are some basic references. For example, the method of trading selection should be based on theory. If some of the basic concepts contained in some method are unreasonable, then this method is undesirable. Second, trading options should tell traders to capture market signals. In the end, this approach should provide some sort of realistic approach to trading people out of trading, rather than cajole traders into doing some sort of trade with their capital.