Lao Yin in Lao Yang's Zhouyi

In the divination of shaking copper coins, if three copper coins are two positive and one negative, it is shaoyang; Two opposites and one positive are shaoyin; Everything is positive, namely Lao Yang; It's all tails, it's old yin.

As the name implies, the Lao Yang of the old Yin means that Yin or Yang has reached the final stage. According to the principle that extremes meet, Lao Yang will become Yin (less Yin) and the old Yin will become Yang (less Yang). However, the change of less yin and less yang is different from the one directly obtained by pressing at first, which belongs to a change, that is, it represents a changing process. In divination methods, this change is of great significance. As for how important it is, it's a long story.

Using 49+ 1 yarrow is complicated, and I personally don't know the specific process. Generally speaking, after many changes, I got several hexagrams mentioned above. If you want to find out the specific method of yarrow divination, I recommend nan huaijin's Miscellanies of the Book of Changes, which I remember mentioned in it.