As of today, the U.S. stock market has been blown for four times. Even Buffett said that he had lived for so many years and saw such a scene for the first time. Similarly, Bridgewater, a well-known fund, was rumored to have exploded. Although the emergency rumor was only a retracement, it was really difficult to read the performance report. Other investment categories, such as oil, gold and pound, all fell sharply. At this time, prudent financial management is also hard to escape. Alipay's "Guo Shou An Xin Li 365", which pushes online celebrity's financial management, was complained of hot search because of the loss of principal due to the net value callback. Netizens have left messages and complained about blood and tears.