Generally speaking, the stock price hit a new high or a new low, but the technical indicators failed to get out of the corresponding strength. If the trend is weaker than the previous trend, it will form a deviation. In other words, retrogression is actually a manifestation of exhaustion of strength, as shown in the following figure: the ratio of C to A:

For divergence and consolidation divergence, the former has the most basic significance, while the latter is only a generalized usage of the corresponding strength analysis method of the former, which is mainly used for strength comparison related to the trend center oscillation. Note that in a+B+c, the consolidation and divergence of A and C can actually be regarded as the central shock of B. Although B did not appear when A existed, we might as well look at it this way.

After a deviation, whether it is a consolidation deviation or a real deviation, in theory, it can only be guaranteed to pull back to the original trend center, which is the correct thinking. So, what happens after the callback? This involves forecasting. The correct way of thinking is to completely classify what happened after the callback and decide your own countermeasures according to the corresponding consequences of each classification.