Diversification of securities, the establishment of a scientific and effective portfolio of securities; Finally, a spokeswoman for the tax department confirmed the news, saying it had collected information through the bitcoin exchange and its investors and sources of information to tax the relevant actions. Mr Draghi added that this meant that the ECB staff and its council were "cautious" in the "bold" stance of inflation. The selection and evaluation of transactions. Engaging in foreign exchange investment, one must choose a profitable trading method. Here are some factors to consider in trading options. Because China's mainstream economics mechanical property right understanding into property of power based on stock, so, in the name of the Chinese norm of the reform of property right will be the eye looks at on the stock of state-owned assets, simple and ridiculous "privatisation" scheme, clear property rights is approximate to "privatization". It was a misreading of coase, a misreading of alchin and even an insult to them. The precise description of property rights should be the right to clarify individual pursuit of wealth.