How to correctly judge the yin and yang attributes of eight characters

Since a person's numerology has both yin and yang, there are also certain criteria. From the eight characters, we can see the likes and dislikes in life, the distribution of five elements, and auspicious days. But how to judge the relationship between yin and yang?

The eight characters are composed of heavenly stems and earthly branches. The heavenly stems are divided into yin and yang, and the earthly branches are also divided into yin and yang. Pushing forward, we can see that the theory of yin and yang of the five elements also comes from this, and the concept of yin wood or yang wood that we often hear also comes from this.

From the perspective of heavenly stems, the attributes of Yang are: A, C, E, G and Ren. The attributes of Yin are: B, D, Self, Xin and Ghost. From the perspective of earthly branches, the odd number is Yang and the even number is Yin. Therefore, the yin and yang properties of the five elements and the eight characters are different, which is the conclusion drawn from this comparison.