Gossip represents the yin and yang system of things' own changes, "one" represents yang, and "-"represents yin. These two symbols are combined in parallel according to the changes of yin and yang in nature to form eight different forms, which are called eight diagrams.
The images of eight diagrams refer to: dry, shock, hurdle, root, Kun, Xun, reason and right. Each six-pointed star represents something. Dry represents the sky, Kun represents the earth, Xun represents the wind, earthquake represents the thunder, ridge represents the water, far represents the fire, root represents the mountain, and sink represents the ze.
Divination mentioned in the Book of Changes is a phenomenon in the universe, which we can see with the naked eye. There are eight basic phenomena in the universe, and everything in the universe changes according to these eight phenomena, which is the origin of the law of gossip.
Learning this is a long process, and it is not easy to understand the Book of Changes thoroughly, so you have to be tenacious.