The second yellow dot has appeared, should we short immediately? Of course not—the candle hasn't given a signal yet. Hold the long position and look upward first; what if it breaks through? If it doesn’t break through and the candle gives a clear red reversal signal instead, then shorting would still be timely.
The candle changing from blue to white indicates an increased probability of a decline; wait patiently for it to turn red for confirmation.
If the candle changes from white back to blue, continue following the long trend, as a downward move is unlikely. If this long position holds, it will likely break the previous pink high point. Today’s target has been achieved.