How do six hexagrams decide the hexagrams in the world and how do they treat hexagrams?

The most important thing is to learn theoretical knowledge, hexagrams' names, hexagrams' houses, the attribution of the five elements, the adaptation, movement, change and contradiction of the world. As for the method of divination. It is flexible and can be used at will. Waving hexagrams is one of the ancient laws, the foundation! ! ! Open the word, ask the time of divination, ask the direction of divination, . . . . Feel free to use it