On December 15th, just a day after the listing, Longfin announced that it was buying Ziddu.com, a singapore-based blockchain, with the shares of Longfin soaring in the face of a digital currency frenzy recently represented by bitcoin. So why is yu 'e bao falling steadily? When the economy overheats and inflation rises, interest rates are raised and credit tightened. When the overheated economy and inflation are under control, the interest rate is duly lowered. Interest rates are therefore one of the fundamental economic factors. Interest rates are an important financial variable in economics, and almost all financial phenomena and financial assets have more or less connection with interest rates. Yu 'ebao, the world's largest money fund, took only four years to achieve the equivalent of 10 years of development, with a maximum annual yield approaching 7%. But in its rapid development, there have also been a big wave of backwater, the most severe, from March 2015 to September 2016, the yield was down from 4.4 percent to about 2.4 percent. In addition to the formal "perfect" in the new classical market concept, the new classical theory has not added new meaning to the classical theory. That is to say, under the new classical "perfect" mathematical model under the skin, it is still classical free laissez-faire order, "new" is "new" in the form. And the form of depth at the expense of perfect at the expense of the thoughts, general equilibrium model of fine arbitrarily abstract away the activities of the "personal pursuit to satisfy desires to promote social welfare" logic support. 3. Modern enterprise period