The Channel of Structuring joins the Throat centre to the Ajna centre through Gates 23 and 43, and both of those numbers are borrowed. They are positions in the King Wen sequence of the I Ching, the Chinese divinatory classic whose sixty-four hexagrams Human Design maps one to one onto the sixty-four gates of its bodygraph. Read as I Ching rather than as Human Design, the two numbers name two independent oracle texts.
Hexagram 23, Splitting Apart (Bo). The mountain resting on a thin base of earth. Its image is the bed splitting leg by leg, collapse working upward, and its counsel is that this is not a time to go anywhere.
Hexagram 43, Breakthrough (Guai). The lake risen to heaven, a cloudburst held for one moment more. It is resolute exposure of what is inferior, made openly at court, with the danger of resolve fully admitted.
The I Ching itself never sets these two hexagrams in a pair. Each stands alone in the sequence, consulted about a changing situation and answered in counsel that passes. The pairing is a construction of Ra Uru Hu's system, published from 1987, which fixes each hexagram to a position in a birth chart and reads the joined pair as a lasting trait of the person. The correspondence of number is real, and both hexagrams can be followed into their own entries in this atlas; the pairing, and the character read out of it, belong to the modern system alone.