Chong Mai — Penetrating Vessel (left) — umbilical lateral (qìhǎi line)
Front-view projection anchor
Chong Mai — Penetrating Vessel (left) — umbilical lateral (qìhǎi line) — front-view trajectory anchor of the extraordinary vessel (Lingshu / Nán Jīng; Deadman). Trajectory anchor, not an acupoint.
Point 15 of 27 in Eight Extraordinary Vessels (qí jīng bā mài) — core four
Cross-tradition overlaps
No overlapping points are registered for this point.
Sources
Huangdi Neijing · Lingshu (primary_canonical)
Canonical notices for the eight extraordinary vessels (qí jīng bā mài); Du/Ren courses in chs. 13 and 60.
P. Deadman, A Manual of Acupuncture (secondary)
Modern pathway reference for vessel trajectories.