What is Zhouyi 9678? How to distinguish between dynamic method and variable method? thank you

In the 9678 hexagram method of Zhouyi, the movement and change refer to the movement and change in the process of grasping and flapping, so as to distinguish them. Initiative is "dynamic" and follow-up is "change"

For example, when occupying a robot, the first thing to do is the external divination. (Apply in the afternoon) The second divination moves first, and it becomes separation. Here, the second of the dry hexagrams changed from yang (fu) to yin (no), so these two hexagrams, the first hexagrams and the third hexagrams were yang, and later they were yang, but the ground branches changed from the original (noon) (noon) to (unitary) (three), and they also changed accordingly.