Whether it is the pressure range or the pressure level, it shows that there are many people buying and selling in this range or at this price, that is, the buying and selling costs of many people are here. This price is the approved area. When the stock price falls here, someone will buy it, and they will think it is the end. They will sell here because they realize that their understanding is wrong. This is the best place to lighten up. So the support and pressure potential are formed.