Self and Other Lines

The self line (shi yao, 世爻) is you. The other line (ying yao, 应爻) is whoever's across the table — a partner in a deal, or the market itself in a trading reading.

The clearest way to picture it: the self line is a cup, and the Wealth line (Qi Cai, 妻财) is water. A strong Wealth line means there's a lot of water. But if the cup has a hole in it, or it's too small, none of that water stays. Plenty of wealth on paper and nothing to show for it — that's exactly what it looks like when the self line can't hold what's coming. The self line has to be able to catch it before any of it counts.

Someone once asked about opening a hot pot restaurant with a friend. In the hexagram, the self line and the other line were in direct opposition — that relationship was already a standoff, before any money changed hands. Read plainly, the partnership wasn't going to work.

The harder part was what the Wealth line did: stirred by the day pillar into a quiet, latent move, it generated the Officer line (Guan Gui, 官鬼) — which happened to be sitting right on the other line. In plain terms, this person's own money was building a road for the other side. There's an old phrase for it: making the wedding dress for somebody else's wedding.

The Parent line (Fu Mu, 父母), standing for the shop's location, was strong on its own — reinforced by the day pillar. But it turned around and struck the Wealth line, which meant the location itself was the problem, dragging the money down with it. Self and other in direct opposition, wealth working for the other side, and a bad location on top of it — three signals pointing the same way. The read: don't do it.

From start to finish, the water never even got near this person's cup.

In a home-trigram hexagram, the self line sits on the top line. Moving through the first-generation to fifth-generation hexagrams, it steps up from the bottom line to the fifth. In a Wandering Soul hexagram it sits on the fourth line; in a Full Circle hexagram, the third.

None of that is arbitrary — it's fixed by which trigram the hexagram belongs to. Knowing where the self line sits tells you exactly where in the reading to look for your own position, before you even get to how the relative lines are generating or overcoming each other.

In a market reading, the other line roughly stands for the broader market or trading environment, and the self line represents your own state right now. A strong self line suggests this is a stretch where you're well-positioned to act. A self line in the void or under pressure suggests you're not — and judgment calls made from there tend to go sideways.

But the self line never sets direction on its own — that still comes from how the relative lines move and change. Don't run that logic backward. Self and other in opposition, read in a market context, describes fighting the market itself — forcing a position against the prevailing move, for instance. Self and other joined describes being in step with the current rhythm, able to actually move with it.

The cup metaphor holds here too. The market can be rallying hard, the Wealth line reading strong across the board, and if your own state, your position sizing, your discipline (the self line) can't hold it, you're still looking at gains you never actually get to keep. That's a big part of why this reading is framed as a rhythm reference, not a buy or sell call — even calling the direction right doesn't matter if you can't hold onto it once it arrives.