It is difficult to make a steady profit, but you can only buy two kinds of stocks, either negative or positive. Buying a negative line means buying an adjusted rebound, and buying a positive line means buying a startup. When a trend begins, few stocks can start on the way down except for a few V-shaped reversals. Most of them are in the process of consolidation. Looking back at 20 18, there is no real meaning at any time except for the stocks started after the end of the policy. Except for a few days after the end of the policy, some of them have doubled, and even now the profits have reached a new high, and the rest of the time can't catch up. Think about it, most of the time in 20 18, they can only buy Yinxian, make a rebound, and be caught as soon as they catch up. Therefore, it is still necessary to change the strategy according to the market and not to make new moves.