There are many situations, depending on whether the stock is at a high or low level that day. Regardless of whether it is pulling up or suppressing at the bottom, it is attracting goods, and whether it is pulling up or suppressing at a high level, it is shipping. A sudden increase is likely to induce bullishness, while a suppression may be an inducement to bearishness. The specifics should be combined with the trend of the next day. Those who pull up may open higher the next day and then fall unilaterally. Suppression may also open lower the next day, and then rise unilaterally. But what is certain is that this is all deliberate manipulation by the main funds to confuse retail investors.