4、 If the purchased item is in an upward trend, there is no need to stop the loss. Patiently holding it for a period of time will inevitably lead to selling out, and there may even be a possibility of significant profits; If the purchased item is in a balanced and volatile trend, there is no need to immediately stop the loss. Be patient and wait for it to enter a high level of the volatility cycle. Once the package is released or the loss is small, you should decisively leave the market and be eliminated; If the purchased item is in a downward trend, once it is confirmed that the downward trend has formed, the loss should be stopped immediately, and one should not be worried about gains or losses and have illusions. Any hesitation or hesitation can lead to a deep trap that is difficult to extricate oneself from.