Zhen jiu — needle and fire

The Chinese name for acupuncture is zhen jiu — literally "needling and moxibustion." Moxibustion is not a footnote to needling; it is its equal partner, the fire to the needle's steel. Where the needle regulates and moves qi, moxibustion adds warmth and yang to the body and drives out cold. Many classical conditions are treated better, or only, by fire.

Moxibustion (jiu) is the burning of the dried, processed herb mugwort (ai ye) on or above the skin, over points and channels, to introduce a deep, penetrating heat. The character jiu itself pictures fire held long against the body.

Why fire, when we already have needles?

The needle is a lever on the qi already present; it redirects what the body has. But when the body is cold, or yang is deficient, there is not enough warm, active qi to redirect — the river is frozen, not merely blocked. Here the needle alone can be too weak. Moxa does something a needle cannot: it puts warmth in, thawing cold, reviving yang, and giving the qi the heat it needs to move.

The Lingshu is explicit: "when the needle does not suffice, moxibustion is appropriate." Cold and deficiency are moxa's home ground.

What moxa does, in one line each

  • Warms the channels and disperses cold — the great use: cold painful joints, cold abdomen, cold-damp obstruction.
  • Supplements yang and rescues collapse — profound yang deficiency, cold limbs, even the emergency of yang collapse (salt moxa at CV-8).
  • Moves qi and blood — warmth frees stagnation that has a cold cause.
  • Lifts the qi — moxa at GV-20 or CV-6 raises sunken qi and prolapse.
  • Prevents disease and builds vitality — regular moxa at ST-36 is a classic tonic for long life and strong digestion.

The felt experience

Good moxa is not a scald. It is a spreading, soaking warmth that the patient feels travel inward and often along the channel — the same "arrival of qi" felt with the needle, now carried on heat. Patients describe deep relaxation and a comfort that lingers for hours.

The needle moves what is there; the fire adds what is missing. This course teaches the fire — its herb, its methods, and its judgement.