Let me talk about it with my personal experience and listen to it to see if it works.

1 What's your breed first? Agricultural products or metal varieties. Because the low opening of agricultural products will not be very large. However, the low opening of metal varieties sometimes jumps violently.

2 judge the trend of your variety in the early stage. Has it been falling? It is still rising, and the sudden gap is low because of external factors or some important news. If it is a trend, it is a decline. If you jump low, don't bounce your gun. Observe whether it is falling with the wind. If so, you can chase the air.

3 See when you hold your position. If you open a short position and open a low position, you can choose to close half of the position and lock in the profit first, because the gap is often accompanied by violent fluctuations.

four

five

six

These are all experiences.

There is too much to say in it to explain it to you one by one. If you want to operate in this field, I'll be happy to answer it for you, because we are fellow villagers.