Since trading coins, I finally understand what the teacher meant:
I originally thought that when everyone said rebound, it was just a rebound.
After trading coins, I realized that when the teacher said rebound, it means take off, consolidation means take off, a 1% rise means take off, everything takes off.
After trading coins, I realized that when the teacher said pullback, it means crash, consolidation means crash, a 1% drop means crash, everything crashes.