Yin and yang — reading the world in two
The first piece of grammar, already drawn on the Korean flag
A story to start
Take out a banknote — no, look closer to hand than that. Picture the flag of Korea. The red and blue in the centre, each embracing the other and turning: that circle is the taegeuk, and it is exactly what we are learning today — yin and yang (陰陽). It is strange that a country living inside the symbol has mostly never been taught it. The first grammar of Saju was already drawn on the flag.
🏺 A spoonful of origin
Pull the characters 陰 and 陽 apart and it gets interesting: both contain the element for a hill (阝). Yang is the side of the hill the sun strikes, yin the side in shade. Sunny slope and shady slope of the same hill — meaning the two were never separate things but two faces of one body. The book that systematised this thinking is the <i>I Ching</i>, one of the oldest classics in the East. It explained everything in the world through combinations of yin (--) and yang (—), and the four trigrams in the corners of the Korean flag come from there.
📖 The main point — not better and worse, but different roles
Yang is bright, extending, exposed — day, summer, fire, a megaphone. Yin is dark, gathering in, holding — night, winter, water, a library. Here is the beginner’s most common misreading: “so yang is good and yin is bad?” No. A world of unbroken day is a desert, and a company of nothing but megaphones is hell. You sleep well in order to run well; you save (yin) in order to invest (yang). The core of yin and yang isn’t superiority but balance and circulation. And they are relative — a father is yang in front of his child and yin in front of his own father. The role changes depending on what you set it against.
🔍 In practice
Every one of the eight characters carries a yin or yang tag. Of the ten Stems, Gap, Byeong, Mu, Gyeong and Im are yang; Eul, Jeong, Gi, Sin and Gye are yin. A chart heavy in yang characters reads broadly as a frank, outward style; heavy in yin, as a fine-grained, gathering style. Later, when you learn the Ten Gods — the labels for relationships — the names split according to whether the polarity matches or differs, so the sense that every character has a polarity keeps getting used.
🗣️ The story people tell
The taegeuk pattern the flag drew on was already in daily use across Joseon — on the gates of palaces and academies, on fans, on ceramics. The reason people painted it on a gate wasn’t decoration but a wish: let this be a space where yin and yang are in balance. In today’s terms, it was roughly like pinning “please let this household keep some work–life balance” to the front door.
🧭 Working through the situations
Let’s put polarity into daily life. At work — you need both the person who pours out ideas in the meeting (yang) and the person who organises them into a plan you can execute (yin) for a team to run. Not who is better, but different roles. In the rhythm of a day — a morning person peaks in yang hours, an evening person in yin hours. Placing important work in your own energy’s hours, rather than fighting your rhythm, is the practical use of polarity. In relationships — the friend who talks a lot (yang) lasting alongside the friend who listens well (yin) is polarity in balance too.
❓ Frequently asked
Q. Do lots of yin characters mean a passive person? No. Yin is the energy of subtlety, endurance and insight. History’s finest strategists won with yin force. Q. Are men yang and women yin? Traditional texts say so, but what matters in reading a chart isn’t gender — it is the polarity of the characters. There are plenty of women full of yang energy and men deep in yin, and that is each person’s individuality. Q. What do the four trigrams on the Korean flag mean? Geon (sky), Gon (earth), Gam (water) and Ri (fire) — four chosen from the eight trigrams of the I Ching to express the harmony of sky and earth, water and fire. It connects to the eight-directions entry in the fortune encyclopedia.
✏️ Today’s one step
Sort the things you meet today into yin and yang. If you hit something ambiguous — an iced americano, bitter so yin, hot so yang? — you have succeeded, because feeling in your body that it depends on the frame of reference is this lesson’s point. Write down just three.