This is a famous saying of Warren Buffett, the world stock god. In other words, when the general public is scrambling for stocks desperately, you should be rational and workers should know how to be afraid of the police. When the market dives to a low level and others are disheartened, you should be brave and try again in this life. This sentence is often taken out by analysts to fool people ... The stock market is very professional, my friend, and your understanding is quite low ... I suggest not to get involved in this invisible battlefield easily.