What is a buying point? What is a selling point?
Not breaking the previous low is a buying point, not breaking the previous high is a selling point. After hearing this, doesn't it seem very simple? How do you determine a low point? After a round of decline, if the previous low price is not broken multiple times, that is a buying point. A high point is when, after a wave of rise, the previous high is not broken multiple times, that is a selling point. Don't make it too complicated.
If you still don't understand, come to the chat room, and the points and positions will be arranged accordingly.