In the A-share market, it experienced three years of bear market adjustment from 2002 to 2005, and a solid bottom was cast in these three years of adjustment. Rain silk, the market began to stabilize in 2006, and all the way went well. When the stock market rose, it became more and more crazy, which led to the stock market skyrocketing in 2007. After the stock market soared in 2007, a lot of bubbles accumulated in the story. With the accumulation of risks in the stock market, the emergence of the fuse of the subprime mortgage crisis in the United States and the resulting financial crisis, the funds in the stock market are no longer enough to maintain the continuous surge of stock prices, which has caused the bubble in the A-share market to burst and thus led to a year-long plunge in the A-share market.