The positive news from the message cannot significantly affect the rebound because we have already absorbed a lot of good news. The impact from negative news is greater. When it breaks the daily new low, we can consider placing a small number of long positions, but it must be a small amount. We do not know when a larger negative news will appear. None of us can catch the price at the new low. When trading against the trend, do not use the entire position, and definitely set a stop loss.