📜 TCM BasicsBeginner

Yin and Yang: The Key to Understanding Chinese Medicine

Yin and Yang are not good and evil, but two complementary forces that form the foundation of everything in the universe and the body.

5 min read
E02

What Are Yin and Yang?

Yin (阴) and Yang (阳) are two opposing and complementary forces. Neither is good and the other evil — both are essential for life.

Yin (阴) — The Still Force

  • Nature: Cold, dark, internal, static, watery
  • In the body: Blood, fluids, solid organs
  • Time: Night, winter
  • Direction: Downward, inward

Yang (阳) — The Moving Force

  • Nature: Hot, bright, external, moving, fiery
  • In the body: Energy (Qi), hollow organs, heat
  • Time: Day, summer
  • Direction: Upward, outward

The Four Rules of Yin and Yang

1. Opposition (对立)

Yin and Yang are opposite in nature. Heat versus cold, movement versus stillness.

2. Mutual Dependence (互根)

Neither can exist without the other. No day without night, no heat without cold.

3. Mutual Transformation (转化)

Under certain conditions, Yin transforms into Yang and vice versa. Extreme cold may produce heat (fever after chills).

4. Dynamic Balance (平衡)

Health is a constant balance between Yin and Yang. It is not a fixed 50/50, but a moving balance that adapts to circumstances.

Types of Imbalance

ImbalanceSymptomsTreatment
Yang excessFever, redness, thirst, agitationCool and nourish Yin
Yang deficiencyCold, pallor, fatigue, frequent urinationWarm and strengthen Yang
Yin excessDampness, edema, heaviness, phlegmDry and move
Yin deficiencyFalse heat, night sweats, drynessMoisturize and nourish Yin

🔑 The Golden Rule: "Where there is Yang, there is Yin. Where there is Yin, there is Yang." They can never be separated.