The twelve palaces of a Zi Wei Dou Shu chart sit in a fixed order around a circular wheel, Life, Siblings, Spouse, Children, Wealth, Health, Travel, Friends, Career, Property, Fortune and Parents, each palace standing exactly opposite the palace six positions away, so Life faces Travel directly across the wheel, the same structural logic that gives Western astrology its opposite zodiac signs, though built here from twelve life domains rather than twelve constellations. This opposite pairing is read as a genuine relationship rather than a coincidence of geometry: a native's core disposition, read in the Life Palace, is understood in the tradition as closely bound to how that same native fares away from home, on the road, or in circumstances requiring adaptation to unfamiliar ground, all domains read in the Travel Palace directly across from it.
Practitioners consult both palaces together as a matter of course, since a star configuration that reads strongly in one is treated as incomplete without checking how its opposite number colours the reading, particularly for the empty palace convention, in which a Life Palace carrying no major star of its own borrows its reading from Travel instead, treating the opposite pairing as capable of standing in for a vacancy rather than only supplementing an occupied palace.