In fact, there are many methods, such as the average theory in trend theory; Time window calculation and point calculation of wave theory; There are also deviations and deviations provided by various technical analysis indicators, which can be used as a reference for pressure support.

Simply put, the so-called support level is the position where the previous market stopped falling and rebounded. Generally speaking, it is more effective at the level of stock cost. Of course, there is also the so-called policy basis, which can also provide support, and it is more psychological and relatively ineffective.

The so-called pressure level is the position where the previous market rose and fell weakly. Foundation and support level are the same, and they can be converted to each other.

According to the supporting resistance theory, once the last pressure level is broken, it will be transformed into the next falling support level. Similarly, once the previous support level is broken down, it will become the next rising pressure level.