Due to the special changes in technology trends and market conditions, technology trends will take many forms, which are mainly divided into two categories according to induction:

One is the reverse form. This graphic form indicates that the original trend will be reversed, that is, the original trend direction will change, for example, the original upward trend will become a downward trend, or the original downward trend will become an upward trend. The typical figures of inversion form are double top shape, head and shoulder shape, straight line shape, dish shape and V shape.

The other is to adjust the form. This chart shows that the trend will stop and do some rest; Without changing the original trend, after a period of consolidation, it may continue to develop towards the original trend. The typical patterns of shape adjustment are triangle, flag, small flag, wedge, diamond, long square and so on.