The Left Angle Cross of Migration is named for Gate 37 and Gate 40, which are in fact the two ends of one channel, Community, so its exposed half is a single bond rather than two separate traits. Human Design reads Gate 37, from Hexagram 37, The Family, sitting in the Solar Plexus, as the warmth of family and friendship, specifically the bargain that holds a household together; and Gate 40, from Hexagram 40, Deliverance, sitting in the Heart or Will centre, as the willpower to work, held against a real need for aloneness and rest. It falls in the Left Angle family, read as transpersonal, a direction answering less to what the individual chooses than to what circumstance hands back.
Its design half is Gate 5 and Gate 35. Gate 5 sits in the Sacral centre and is read as fixed rhythm, an inner timing that keeps eating, sleeping and working patterned; it pairs with Gate 15 in the channel of Rhythm. Gate 35 sits in the Throat and is read as a hunger for progress and for the feeling only a new experience supplies; it pairs with Gate 36 in the channel of Transitoriness.
So a chart carrying this cross holds one whole bond of belonging and withdrawal on its surface, while beneath it a fixed rhythm presses against a restlessness for what is new. The same four gates also recur across other crosses under other names, the Right Angle Cross of Planning and its own mirror; this exact ordering also appears as the Juxtaposition Cross of Bargains and, reversed, as the Cross of Denial. The hexagrams are ancient; grouping them into one transpersonal cross is the modern system's own construction, dated to 1987.