3. First sex. Plan is the premise of other management work, plan before and after action. The investment of securities provides an important means for the central bank to conduct financial macro-control, which is of great significance to the sustainable and efficient development of the national economy. The difference between the income and the total income has been realized 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. First of all, the earnings of the fund in 2017 are in an uncertain environment. The first half of the market is in a period of "cash shortage". Towards the end of the year, the central bank started to fight for the "money shortage", so monetary policy eased and interbank money market rates fell. As a result, yu 'ebao's yields suddenly fell below the 4 per cent mark. Until then, depositors had not even seen a rise.