1. The Black swan event refers to a very unpredictable and unusual event, which usually causes negative reactions or even subversion in the market chain. From the subprime mortgage crisis to the Southeast Asian tsunami, from the 9. 1 1 incident to the sinking of the Titanic, the Swiss central bank abandoned the lower exchange rate limit between the euro and the Swiss franc, and the Swiss franc soared. Black swan exists in all fields, no matter financial market, business, economy or personal life, it can't escape its control.

Second, the origin of the name

Before the discovery of black swans in Australia, Europeans before17th century thought that swans were all white. But with the appearance of the first black swan, this unshakable belief collapsed. The existence of the black swan symbolizes an unpredictable and rare event, which is unexpected, but it has changed everything. Humans always believe in experience too much, but they don't know that the appearance of a black swan is enough to subvert everything. However, whether in the expectation of the stock market, the decision-making of the government or the simple choices of ordinary people, the black swan is unpredictable. The September 1 1 incident, the subprime mortgage crisis in the United States and the snowstorm in China all confirmed this point.

For more details about the Black Swan incident, please see Baidu Encyclopedia:/view/1335126.htm.