Rational setting: There are two kinds, panel setting and trend setting. It is better to grasp when judging that the market is in the adjustment stage and there is room for box fluctuation and synchronous fluctuation. Generally, the strategy of buying low and selling high is adopted to stop the loss. Other adjustment states are determined by experience and difficult to communicate. The determination of the trend target position usually belongs to the profit price determined by technical calculation and historical experience to avoid being too greedy.
Imagination setting: it belongs to irrational subjective imagination. The setting of its target shows that it is willing to ignore the objective, and its trading behavior is destructive and huge.
In short, no matter why, you can't forget your psychological endurance and set a stop loss.