The clear-head, open-ear point of the San Jiao channel. Zhongzhu (SJ-3) cuts through heat, lifts the fog from the senses and eases pain along the channel — when the ears are ringing, the temples are pounding or heat is rising through the Shaoyang, this is a key point to reach for.
Contraindications
Zhongzhu (SJ-3) is a safe and widely used hand point with no special contraindications at the standard depth. Keep to the stated depth and clean needle technique.
Name & story
The name 中渚 Zhongzhu means "Central Islet" — a small island sitting in the middle of a waterway. Picture a sandbank rising from the stream between the knuckles of the ring and little fingers: the point sits right there, in a little hollow, like a quiet island in the flow of the San Jiao channel. That image of water and a central resting place suits the point well — the San Jiao governs the body's waterways, and this point sits at a natural gathering place along its course.
Point family & character
Zhongzhu (SJ-3) belongs to the San Jiao channel (SJ). In character it is the Shu-Stream point and the Wood point of the channel. These two roles together give it a special quality: as a Shu-Stream point it is particularly good at moving Qi and relieving heaviness and pain, and as the Wood point of a Fire channel it is especially well suited to draining excess and clearing heat that is rising through the Shaoyang.
Five-element dynamics
The San Jiao channel belongs to the Fire element, and Zhongzhu (SJ-3) is its Wood point — Wood within Fire. In the generation cycle, Wood feeds Fire; so this point carries a sense of movement and ascent, with a strong capacity to stir and clear what is stuck or blazing upward along the channel. The Shaoyang (which includes both the San Jiao and Gallbladder channels) is called "the pivot" in classical six-channel theory — neither fully open nor fully closed, it regulates the turning between interior and exterior. When heat or fire rises through this pivot and harasses the upper body — burning the ears, heating the eyes, hammering the temples — Zhongzhu (SJ-3) as the Wood point can help bring that fire down and restore the pivot's smooth turning.
Location
Find the knuckles of the ring finger and little finger on the back of the hand. Zhongzhu (SJ-3) sits in the depression just behind (proximal to) those two knuckles, between the fourth and fifth metacarpal bones. A helpful trick: it sits at the apex of an equilateral triangle formed by the point itself and the two prominences of the ring and little finger knuckles. Locate it with the hand resting in a loose fist.
Anatomy & fascia
The point lies on the dorsum of the hand, between the fourth and fifth metacarpal bones, in the soft tissue just proximal to the knuckles of the ring and little fingers.
The golden tip
For ringing ears, a headache over one temple, or that blocked, muffled feeling in the ears after a flight or a cold, find Zhongzhu (SJ-3) on the back of the hand: make a loose fist and feel for the small hollow just behind the gap between the ring finger and little finger knuckles. Press or massage firmly for 1–2 minutes on each hand. On the plane: try pressing the point while gently pinching your nose shut and attempting to blow — many people feel the ears pop more easily. For one-sided headaches along the temple, rubbing this point can also bring quick relief.
For education only — not medical advice. Consult a qualified practitioner.