What do you mean by four-column sound?

We know that there are five elements in heaven and five elements in earth, so will the two words combined by heavenly stems and earthly branches have five elements? The answer is yes, these five elements are what we call "Yin Na Five Elements". The original five elements are called positive five elements, and Nayin five elements are called borrowing five elements, because it is a combination of Nayin five elements and twelve tones.

That is to say, there are 50 numbers, and we take 0~49, in which the stems of A and B are a group, the stems of C and D are a group, the stems of Wuji are a group, the stems of Geng Xin are a group, and the stems of non-dodecyl are a group. Subtract the sum of branches from 49, and subtract 10 from the final number.

Take Jia Zi and E Chou as examples: Jia Zi Jiu Zi and E Chou Ba, their sum is 34, 49 minus 34, and the remainder is 15. At this time, if the remainder exceeds 10, then subtract 10 from 15, and finally the palace yin at 5 and 5 is soil, which can generate gold. Therefore, the five elements corresponding to Jia Zi and E Chou's Yin Na are "gold".