The Four Spirits: Yuan, Ji, Chou
Last updated 5/21/2026
Once the target line is fixed, three other roles become visible.
The target has a support line. It has an obstacle line. It may also have a line that blocks the support before it reaches the target.
Together these are the four spirit roles of a reading.
The line that represents the subject of the question.
The element that generates the target's element.
The element that controls the target's element.
Source basis: Zengshan Buyi, Four Spirits chapter; Bushi Zhengzong, Yuan and Ji mnemonics. Source-language definitions are kept out of the lesson flow; the mechanics are preserved here.
The derivation
The four roles are not chosen by intuition. They are derived from the Five Phases wheel.
Start with the target’s element.
Whatever line represents the question's subject.
If the target is Earth, Fire is Yuan because Fire generates Earth.
If the target is Earth, Wood is Ji because Wood controls Earth.
If the target is Earth, Water is Chou because Water controls Fire and generates Wood.
Chou is the subtle one. It is not simply “an enemy.” It is the element that does two things at once:
Chou controls Yuan, so the support line cannot cleanly feed the target.
The same element generates Ji, so the obstacle receives more force.
That is why Chou matters. Ji attacks directly. Chou attacks indirectly: it cuts the supply line and strengthens the attacker.
If the target is Earth
Case 1 gives us an Earth target, so the whole structure is easy to see.
The father's line in Case 1 is Parent / Chen / Earth.
Fire generates Earth, so Fire lines are Yuan.
Wood controls Earth, so Wood lines are Ji.
Water controls Fire and generates Wood, so Water lines are Chou.
Metal is not one of the four roles for an Earth target. It can still matter elsewhere in the chart, but it is not target, support, obstacle, or support-blocker for this specific target.
Case 1 role map
In Case 1, the target is line 3: Parent / Chen / Earth.
That one decision determines the rest of the spirit set.
The father is the target, so Parent / Chen / Earth at line 3 becomes Yong Shen.
Yong Shen. The father as patient. This is the line the reading centers on.
Yuan Shen. Fire generates Earth, so this moving line is the target's support.
Ji Shen. Wood controls Earth. The Day clash makes this line Dark Moving, so the obstacle is active.
Chou Shen. Water blocks Fire and feeds Wood, but this line is quiet in the case.
Source basis: Yehe Laoren, Zengshan Buyi, Case 1. The case explicitly explains the grave condition through the Day-clashed Wood line attacking the Earth target.
The result is readable without technical source labels:
- Target: the father, line 3, Earth.
- Support: Fire at line 4, moving.
- Obstacle: Wood at line 2, secretly active through the Day clash.
- Support-blocker: Water at line 1, present but quiet.
The case is not difficult because the target is unclear. It is difficult because the support and obstacle are both alive in different ways. The supporter is moving; the obstacle is Dark Moving. Act 5 will ask which force wins.
What to check in any reading
Once the four roles are named, the practical checklist is stable.
Check seasonal strength, Void, Month-Broken, Day pressure, movement, and position.
A strong or moving supporter helps only if the path is not blocked, bound, void, or redirected.
A quiet obstacle may be tolerable. A moving, supported, or Dark-Moving obstacle becomes central.
Chou matters when it actually cuts the support path or strengthens the obstacle.
Traps
Yuan generates the target. Ji controls the target. If unsure, return to the Five Phases wheel.
Chou is not "the enemy" in the question. It is a structural role: blocker of support, feeder of obstacle.
A chart can have multiple Fire lines, multiple Wood lines, or none. The role can be a set until later rules narrow it.
Yuan, Ji, and Chou are mechanics. Whether they are welcome depends on what outcome the question wants.
What this module establishes
Yong is the target. Yuan supports it. Ji attacks it. Chou blocks support and feeds the attack.
All three non-target roles are derived from the target’s element. No guesswork. No source chart required in the lesson flow.
Next we widen the selection problem: not every question is a simple Six Relative lookup.
-> 4.4 Selection Methods