The bones of the bagua
The Eight Trigrams
Under the feng shui bagua, under the I Ching, under a great deal of Chinese thought, sit eight small figures made of three lines each. They are the trigrams, the bā guà proper, and once you can read them the rest of the system stops looking arbitrary and starts looking like a language.
Each trigram is three stacked lines, and each line is either solid (yang, active) or broken (yin, receptive). Three lines, two kinds, makes eight combinations. Eight trigrams. That's the whole alphabet.
The eight, and what they are
Each trigram is a force of nature and a member of a family:
- ☰ Qián, Heaven — three solid lines, pure yang. The creative, the father, metal.
- ☷ Kūn, Earth — three broken lines, pure yin. The receptive, the mother, earth.
- ☳ Zhèn, Thunder — the arousing, the eldest son, wood. A shock that wakes things.
- ☴ Xùn, Wind — the gentle, the eldest daughter, wood. Slow, penetrating, like roots.
- ☵ Kǎn, Water — the abysmal, the middle son. Danger and depth, the flowing.
- ☲ Lí, Fire — the clinging, the middle daughter. Light, clarity, what catches.
- ☶ Gèn, Mountain — keeping still, the youngest son, earth. Stillness, boundary, pause.
- ☱ Duì, Lake — the joyous, the youngest daughter, metal. Openness, pleasure, exchange.
Two arrangements
The trigrams are placed around an octagon, and there are two classic arrangements. The Earlier Heaven (Fu Xi) order is the ideal, symmetrical cosmos, heaven opposite earth. The Later Heaven (King Wen) order is the world in motion, the one feng shui uses to map directions and the one the bagua's life-areas follow. When you read a room by the compass, it is the Later Heaven order you are laying down.
Stack two trigrams and you get a hexagram, six lines, and sixty-four of those make the I Ching.
Why it matters for the home
In the bagua, each of the eight outer life-areas is one trigram, and its trigram is why it carries the element and the meaning it does. Fame is Lí, fire, so it wants light. Career is Kǎn, water, so it flows. Knowing the trigram under an area tells you, without memorizing a list, how to tend it.
To see the same eight figures doubled into the sixty-four hexagrams, the I Ching is the place; to lay them over your home, the feng shui reading and the bagua map.
Eight figures, two kinds of line, the whole cosmos spelled in binary a few thousand years before anyone called it that. Sit with the eight until they feel less like symbols and more like weather, and the bagua and the I Ching both open up. The Book of Changes carries the story further.