The Channel of Mating joins the Solar Plexus centre to the Sacral centre through Gates 6 and 59, 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 6, Conflict (Song). Heaven moving up while water moves down, two courses that pull apart. It is the hexagram of contention, and it counsels meeting an adversary halfway, for carrying a quarrel to its bitter end turns even victory sour.
Hexagram 59, Dispersion (Huan). Wind blowing over water, dissolving its rigidity. It is the dispersal of what divides, the king approaching the temple, the time to cross the great water.
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.