Yongquan (KI1) — anatomical left
Gushing spring — sole press
Yongquan is the Kidney-channel well point on the sole, used here as the closing grounding press after the circuit rises and returns through the limbs. The anatomical-left sole marker is rendered at x > 0.5, with the sole itself represented by the front-view foot silhouette rather than a literal dorsal surface.
Point 16 of 16 in Anmo-Tuina Acupressure — self-massage circuit
Cross-tradition overlaps
No overlapping points are registered for this point.
Sources
Nan Jing (Classic of Difficult Issues) (primary_canonical)
Nan Jing, Difficulties 66 and 68, discusses the yuan-source system and the five shu point classes; this supplies the Kidney-channel diagnostic framework around Yongquan (KI1), not a modern point-location specification.
Claude Diolosa, TCM tuina teaching texts (secondary)
WHO Scientific Group, International Standard Acupuncture Nomenclature (secondary)