Dui
Dui is one of the Eight Trigrams, or bagua, in Chinese cosmology. It is commonly associated with the lake or marsh, the metal phase, the west, autumnal decline, speech, exchange, and forms of pleasure or delight. In symbolic systems derived from the trigrams, Dui often describes openness, persuasion, pleasure, and the social circulation of ideas or resources.
Within broader Chinese metaphysics, the trigram is not usually read in isolation.
Its meaning depends on relation
to the other trigrams, to yin-yang balance, to seasonal context, and to the specific technique in use. In feng shui, Qi Men Dun Jia, and other correlative arts, Dui may describe a direction, a palace, a quality of qi, or a mode of action. That flexibility is part of the tradition rather than a sign of inconsistency.
For readers coming from Western astrology, the most useful comparison is not to a planet but to a compact symbolic cluster.
Dui gathers several correspondences into one shorthand
place, season, element, family role, mood, and style of expression. Because of that, it works best when interpreted inside a full Chinese cosmological framework rather than translated too quickly into Western sign meanings.
Dui is worth defining clearly because it appears in adjacent Chinese timing and geomantic material and gives readers a foothold in the bagua vocabulary. From there, it becomes easier to understand how directional, elemental, and seasonal correspondences are braided together in the larger bagua system.