How to distinguish the positive and negative sides of copper coins or coins by the six hexagrams divination method of the Book of Changes?

Grass was used at first, and then copper coins were used. Copper coins have negative words, but not positive words with patterns. Now because there are few copper coins at home, most of them are modern coins, such as fifty cents and ten cents. Nowadays, the use of coins is the same as that of the original Bao Tong, with words as yin and no words as national emblem or flowers as yang.