Money supply is determined by the central bank of exogenous variables, the demand for money depends on the liquidity preference of people, when people's liquidity preference to enhance tend to increase the money hold, so rates are determined by the liquidity preference in joint decision currency demand and currency supply; Loanable ZiJinLun combines the first two interest rate determinism, that interest rate is determined by the supply and demand of loanable funds, including the total savings and new bank money supply and demand including the total investment and new currency demand, interest rate decision depends on common commodity market and money market equilibrium 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. International online report (guo hao, China Radio International) : when it comes to South American wine, the first thing that comes to mind is the export of wine from Chile to Argentina. But in recent years, wine from the mountains of south Rio grande, southern Brazil, has been rising to prominence in the international wine market because of its crisp taste and high "cost performance". And China, a big consumer of wine, is a "key target" for Brazilian vintners. In the past year, Brazil has exported nearly 200,000 bottles of wine to China, and some Brazilian wineries have set up shop in China and even opened online stores. Brazilian red wine is quietly entering the Chinese people's table.