The main funds are used for high-priced shipments. Call auction can only produce the opening price, such as opening higher and leaving lower, that is, the main funds are opening higher and shipping. When it opened higher, many wait-and-see funds were worried that they could not be bought, so they entrusted it at a higher price, and thus the deal was made. After dealing with the outflow of funds, the stock price is easy to fall. At this time, it is necessary to analyze according to the position of the stock price.