Chapter 99: On Illness

Reading modeFocused reading

Holistic Interpretation
This chapter systematically discusses the logic of divination for illnesses, emphasizing the central role of the Useful God while disregarding secondary factors such as planetary influences and the Six Gods. Acute and chronic illnesses require distinct approaches, with the Six Clashes, hexagram changes, Empty Stems, and Moon Breaks each carrying different meanings. 🌱 A strong and prosperous Useful God indicates vitality, while 🌑 a weak and restrained one suggests danger. Through multiple case studies, the chapter demonstrates practical methods such as cross-referencing multiple hexagrams and divination by relatives, highlighting the need for flexible judgment based on the severity of the illness and the identity of the querent.

🧩 Structured Components

Embedded chart

Case: Divining a Son's Acute Illness

Male chart

Stem-branch set	Set 1	Set 2	Set 3	Set 4	Set 5	Set 6	Set 7	Set 8	Set 9	Set 10	Set 11	Set 12
Stem	G	n	Y	n	h	n	o	t	G	n	Y	n
Branch	e	g	i	S	e	M	n	h	e	g	i	D

Embedded chart

Case: Divining a Son's Illness

Male chart

Stem-branch set	Set 1	Set 2	Set 3	Set 4	Set 5	Set 6	Set 7	Set 8	Set 9	Set 10	Set 11
Stem	R	n	i	h	n	o	t	R	n	i	a
Branch	e	Z	S	e	M	n	h	e	Z	D	y

Embedded chart

Case: Divining a Wife's Illness

Female chart

Stem-branch set	Set 1	Set 2	Set 3	Set 4	Set 5	Set 6	Set 7	Set 8	Set 9	Set 10
Stem	Y	M	o	i	M	n	h	i	a	D
Branch	i	a	Y	n	o	t	Y	M	o	a

Embedded chart

Case: Self-Divination for Illness

Male chart

Stem-branch set	Set 1	Set 2	Set 3	Set 4	Set 5	Set 6	Set 7	Set 8	Set 9
Stem	W	W	S	M	n	h	u	u	a
Branch	u	u	i	o	t	W	W	D	y

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Case: Self-Divination for Medication Efficacy

Male chart

Stem-branch set	Set 1	Set 2	Set 3	Set 4	Set 5	Set 6	Set 7	Set 8	Set 9	Set 10	Set 11	Set 12
Stem	B	n	Z	S	e	M	n	h	i	g	i	a
Branch	i	g	i	h	n	o	t	B	n	Z	D	y

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Case: Divining a Son's Pox Symptoms

Male chart

Stem-branch set	Set 1	Set 2	Set 3	Set 4	Set 5	Set 6	Set 7	Set 8	Set 9	Set 10	Set 11	Set 12
Stem	X	n	a	C	o	M	n	h	i	M	o	a
Branch	i	M	o	h	u	o	t	X	n	a	D	y

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Case: Divining a Father's Acute Illness

Male chart

Stem-branch set	Set 1	Set 2	Set 3	Set 4	Set 5	Set 6	Set 7	Set 8	Set 9	Set 10	Set 11	Set 12
Stem	G	n	C	e	X	M	n	h	e	g	h	n
Branch	e	g	h	n	u	o	t	G	n	C	e	D

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Case: Self-Divination for Illness with Three Harmonies

Male chart

Stem-branch set	Set 1	Set 2	Set 3	Set 4	Set 5	Set 6	Set 7	Set 8	Set 9	Set 10	Set 11	Set 12
Stem	B	n	X	C	o	M	n	h	i	g	u	a
Branch	i	g	u	h	u	o	t	B	n	X	D	y

Embedded chart

Case: Divining a Nephew's Chronic Illness

Male chart

Stem-branch set	Set 1	Set 2	Set 3	Set 4	Set 5	Set 6	Set 7	Set 8	Set 9	Set 10
Stem	Y	Y	u	i	M	n	h	i	o	D
Branch	i	o	Y	n	o	t	Y	Y	u	a

Embedded chart

Case: Self-Divination for an Epidemic

Male chart

Stem-branch set	Set 1	Set 2	Set 3	Set 4	Set 5	Set 6	Set 7	Set 8	Set 9	Set 10	Set 11	Set 12
Stem	B	n	Y	n	i	o	t	B	n	Y	n	a
Branch	i	g	i	Z	M	n	h	i	g	i	D	y

Embedded chart

Case: Divining a Son's Fever

Male chart

Stem-branch set	Set 1	Set 2	Set 3	Set 4	Set 5	Set 6	Set 7	Set 8	Set 9	Set 10	Set 11
Stem	Y	W	i	h	u	o	t	Y	W	i	a
Branch	i	e	C	o	M	n	h	i	e	D	y

🧠 In-Depth Understanding

Core Concepts 💡

The Useful God as the Foundation: Illness divination focuses on the strength and decline of the Useful God, disregarding distracting factors like hexagram bodies and planetary influences.
Distinguishing Acute and Chronic Illnesses: Acute illnesses are often favorable when encountering clashes or emptiness, while chronic illnesses are unfavorable under the same conditions, especially if the Useful God lacks root support.
Dynamic Analysis: Judgment must integrate the type of illness, the patient's condition, and the combination of hexagram images.

Modern Interpretation 🌟

Integration with Medicine: Divination results should be combined with modern medical diagnosis as a supplementary reference for decision-making.
Psychological Factors: Hexagram images reflect physical and mental states; the Descendant line often indicates a positive mindset conducive to recovery.
Temporal Dimension: Acute illnesses focus on short-term recovery, while chronic illnesses require attention to long-term trends.

Practical Value ⚡

Guidance for Seeking Medical Care: Hexagram images can suggest directions for treatment or choices of physicians (e.g., a doctor from the north).
Timing for Recovery: Days of filling emptiness or breaking restrictions often mark turning points.
Risk Warning: Three Harmony formations indicate prolonged illness, while a restrained Useful God signals critical periods.

Philosophical Reflections 🤔

The Principle of Balance: Neither an overly strong nor overly weak Useful God is auspicious, reflecting the Confucian and Taoist idea of "middle way balance."
Adaptive Thinking: Hexagram changes reflect the patterns of illness progression, emphasizing dynamic observation.
Harmony Between Heaven and Humanity: Adjusting directions (e.g., sleeping facing south) can improve environmental energy.

📚 Related Knowledge

Key Concepts

Selecting the Useful God: For self-divination, observe the Self line; for divining relatives, observe the corresponding line.
Six Clashes Hexagrams: Favorable for acute illnesses but unfavorable for chronic ones.
Timing of Empty Stems: Auspicious for acute illnesses when emptiness occurs, with resolution on the day emptiness is filled.
Three Harmony Formations: Often indicate lingering and hard-to-cure illnesses.

Modern Research

Empirical studies on the integration of clinical medicine and Yijing studies
Scientific validation of the impact of psychological suggestion on recovery
Modern applications of traditional chronomedicine

Note: This chapter, through extensive case studies, establishes a Useful God-centered system for illness divination. It emphasizes a scientific attitude of seeking truth from facts and cross-verifying multiple hexagrams, providing an important reference for the modern application of Yijing studies in medicine.