According to the relevant data of Baidu Encyclopedia, crash is a stock market term, which means that when all the existing shareholders are trapped and no new shareholders enter the market, when the trapped shareholders only know how to cut the meat and sell shares and refuse to buy shares, the vicious circle will continue to fall, eventually leading to the stock market closing.

Strengthening capital market supervision, establishing risk early warning mechanism, strengthening investor education, stabilizing market sentiment and strengthening international cooperation can effectively prevent the collapse.