On the anterior midline, over the sternum, at the level of the second intercostal space.
🧭 How to find it (practical)
In supine decubitus or seated, locate the point on the midline of the sternum, at the level of the second intercostal space.
🔬 Anatomy
Body of the sternum. Innervated by the second intercostal nerve.
💉 Needling
Transverse (subcutaneous) insertion, 0.3–0.5 cun.
📜 Etymology
Zi (紫), purple; Gong (宮), palace. Zi Gong is the name of a star and refers to the residence of the Emperor. The point corresponds to the Xin (Heart), the monarch of the organs, hence called Zi Gong.
