Another element of the market-tracking plan is determining the number of foreign exchange futures markets to track and the number of transactions to be traded within a certain period of time. On the basis of introducing marginal concepts and mathematical argumentation, neoclassical has established a formal "perfect" mathematical model for the neoclassical "laissez-faire order" : general equilibrium. The price is the most important independent variable in this model, which can also be called price mechanism. The process of achieving general equilibrium is also a process of social resources guiding the flow of prices, so the price mechanism regulates the allocation of social resources. With the development of p2p, many people in the market have been hurt. Many people in the market have begun to reject the p2p in particular, but they are also conflicted, and are afraid and rejected by the high yield. In fact, high-yielding p2p wealth management products are not from high risk, and they are not unreliable. However, after all, financial investment is risky. For investors, how to find safe and reliable channels to ensure their high yield is the most important issue. Similarly, while Mr Trump's rhetoric on immigration is intense, his policy is relatively moderate, probably because many businessmen who support his campaign do prefer a moderate approach. The "Muslim ban" does not affect America's Labour supply. Although the pace of deportation has accelerated under Mr Trump, it is worth mentioning that millions of undocumented immigrants have also been deported by Mr Obama. The border wall that Mr Trump has forced Mexico to pay remains a dream of no capital. Even if the government plans to favor skilled workers, it will not necessarily reduce the number of legal immigrants.