What is "hexagram"?

Hello, hexagrams, also called six hexagrams, are the laws summarized by the ancients by observing the laws of nature. Originated from Fang Jing's Najia system in the Western Han Dynasty. At first, 50 yarrow was used, and it was not until the Song Dynasty that "money was used instead of yarrow".

The forecaster put three copper coins in his hand, clasped his hands, thought about what he had measured, and let the measured information melt into the copper coins. After shaking his hand, he put it in the divination tray and threw it six times. Ibu, then change. Judging the development process and results of things by measuring the branches of divination on that day, six relatives and six beasts mainly rely on the words of combining the five elements with the Book of Changes.