Chapter IV - On the nature of the trigrams
Note of the compiler: In my view these paragraphs should be preceded by Shuo Kua, Chapter 3-10, which is totally out of place there.

IV - 1
In the yang-trigrams there are more of the yin-lines, and in the yin-trigrams there are more of the yang-lines.

IV - 2
What is the cause of this? The yang-lines are odd, the yin-lines are even.

IV - 3
What method of virtuous conduct is thus intimated? In the yang-trigrams we have one ruler and two subjects, suggesting the way of the superior man; in the yin-trigrams we have two rulers and one subject, suggesting the way of the common man.