Xīn 心 — Heart channel-entry target
Heart network affinity
A Heart channel-entry designation names affinity with the Heart network in the materia-medica tradition. The midline chest point is a functional target-organ projection and should not be read as a map of cardiac drug distribution.
Point 5 of 12 in Gui Jing (歸經) — Meridian Tropism
Cross-tradition overlaps
No overlapping points are registered for this point.
Sources
Shennong Bencao Jing (神農本草經) (primary_canonical)
The materia-medica corpus classifies substances by nature, function, and therapeutic destination; it is a classical source for tropism reasoning but does not present a modern twelve-meridian diagram.
Bensky, Clavey & Stöger, Chinese Herbal Medicine: Materia Medica (secondary)
A contemporary materia-medica reference that records channel-entry and organ-affinity conventions used in clinical Chinese herbal practice.