Money divination, how to determine yin and yang? Mr. Nan said that two yin and one yang are recorded as yang, but there are also many writings that record two yin and one yang as yin. Is there an exac

Money divination, how to determine yin and yang? Mr. Nan said that two yin and one yang are recorded as yang, but there are also many writings that record two yin and one yang as yin. Is there an exact statement? Hehe, I've always been confused. Personally, I think Mr. Nan Huai Jin is right. Two yin and one yang are recorded as yang. Take copper coins as an example. The ancients used the back of copper coins as the yang side (Chinese medicine also thought that the back of people was yang), one back was yang, the other was yin, the third was yin, and the third was old yin. I wonder if the answer is satisfactory.