The pressure line, that is, the price will encounter some pressure when it runs there. If an effective breakthrough is made, the pressure line will be transformed into a support line; If you can't break through or don't stand on the line after the breakthrough, the pressure is still effective. Looking for the pressure line is generally through the trend back pressure line, golden section, gap, moving average, early high and low points and so on. The pressure lines found in several ways overlap in one place, which is called "pressure vibration", where the pressure effect is more obvious.

As for the lifeline, it generally refers to an average that the price runs and is supported many times, such as the 40-day moving average and the 60-day moving average, which can also be regarded as the main control line.