Modern economy, the interest rate as the price of money, not only restricted by many factors in the economic and social, and changes in interest rates to have a great impact on the economy as a whole, as a result, modern economists are studying the interest rate decision problem, pay special attention to the relationship between the variables and the balance of the economy as a whole, the interest rate decision theory has experienced the classical interest rate theory, Keynes's interest theory, interest rate in loanable funds theory and is-lm analysis as well as the contemporary evolution of dynamic interest rate model, the development process. It goes without saying that the overall objective of foreign exchange investment is to achieve the greatest possible benefit of risk. As in any other venture capital, "earnings" is a function of the time required, which is not measured in terms of the monetary gain. A small profit in two or three days means that the deal is a success. On the other hand, this small interest will not be available for two or three months, even if it is a 100% profit, and it may not necessarily be cost-effective from the point of view of time. Overnight, the benchmark 10-year Treasury note fell 8/32, yielding 2.480%, its highest level in nine months. It even hit 2.5 per cent on Wednesday. These goals are ambitious, but they also remind us to do one thing in the right way. India's bitcoin exchange has set up a self-regulating organization that sets standards for KYC and AML standards, as local regulators are unclear about the industry's management and guidance. Earlier this month, India's central bank issued a warning against investments or use of cryptocurrencies such as bitcoin. In mid-november, India's Supreme Court has urged government authorities to regulate bitcoin, as it sought to clarify the legal status of bitcoin in India. A historical experiment. In 1934, the Chrysler corporation of the United States first adopted a streamlined body design. In 1937, German design genius fernand porsche began designing cars resembling the beetle. Not only did the beetle crawl on the ground, but it also flew in the air, and its physical resistance was small. Dr Porsche maximized the merits of the beetle's appearance, making "vw" cars the representative work of streamlined cars at the time. The "golden age" of the beatles was the "golden age" of the car from the 1930s to the late 1940s. It said the budget crunch was necessary to undermine Britain's fiscal position in the wake of the 2008 financial crisis. But the fund questioned whether the fiscal sector