Chart patterns like trend channels, pennants, flags, etc. create support and resistance levels.
When price breaks out of a bearish chart pattern (it will often break out in the direction of the higher time frame trend), the level that acted as support inside the chart pattern will become resistance.
For example:
You have a channel and price break the support level. If if price starts rising again you want to watch the old support level closely. Because if you get a 10X sell signals here, you have a high probability trade.