If you see a certain futures product suddenly reducing its position during the session, it means that a certain party is leaving the market. This exit can be proactive or passive. What is proactive position reduction? It is generally done by the profit-making party. The position for active position reduction is generally at a high or low level, or at a staged top or bottom that the profit side considers. After taking profits and waiting and watching, we may launch a reverse attack. What is meant by passive lightening is to admit defeat and leave the market. Passive position reduction is usually accompanied by a fierce attack by one party. From the perspective of following the trend, when actively reducing positions at high or low positions causes the price to change in a direction that is not conducive to your position, you need to pay special attention to it. You might as well take the initiative to take profit. In addition, if the market trend is consistent with your expectations, participate more in the market increase of positions, or increase the awareness of your own positions.