The eight characters are C and B. Are they pure yin?

Who said, hit: Bingzi and Five Elements belong to Yang, where is Pure Yin?

In these ten days, A, C, E, G and N are yang, and B, D, G, G and N are yin. Among the twelve branches of the earth, zi, yin, Chen, noon, Shen and Xu are yang, while ugliness, Mao, Si, Wei, You and Hai are yin. The eight characters consist of four heavenly stems and four earthly branches. If these eight words are all negative or positive, they are called pure yin or pure yang.

May good luck always accompany you! ! ! ! ! ! ! ! !