Sanming TonghuiVol. 1, On the Nature and Fortune of the Sixty Jiazi (verdicts & remarks)
Xin You Wood is pomegranate fruit, delighting in autumn and summer. Established Lu [Jian Lu], Crossing God [Jiao Shen], Nine Ugliness [Jiu Chou], Eight Monopolies [Ba Zhuan], Suspended Needle [Xuan Zhen], Deaf and Mute [Long Ya].
Geng Shen and Xin You Metal correspond to Dui in the west, while Jia Yin and Yi Mao Wood image Zhen in the east.
Therefore, Jia Yin meeting Geng Shen is not considered a punishment, and Yi Mao meeting Xin You is not considered a ghost; this is the proper form of Wood wife and Metal husband, demonstrating the spiritual transformation of left and right.
Wood governs the ethereal soul [hun] and Metal governs the corporeal soul [po]; the two stand left and right, separated and not conjoined, yet if Metal combines with Wood, the generation and transformation of spirit become seamless.
If Geng Shen meets Yi Mao, or Xin You meets Jia Yin, they are not deemed Yuan Chen [Great Consumer], but an application of flexible adaptation.