Regarding this Hexagram. I am interested in any comments on the Yang within Yin trigram that makes up the foundation of this hexagram. I am always a little apprehensive when I see this trigram at the beginning of any reading that I am doing. Are there any commentaries on this particular trigram that talk about the Yang line trapped within the Yin lines? How is this explained in natural occurrences, on mental, spiritual, and emotional planes of existence?