
Location
Medial leg, 0.5 cun posterior to KI3, Achilles
Needling Depth
0.3–0.5 cun
Shallow — low depth risk.
Always palpate landmarks and angle away from vital structures. Chest/neck: oblique, shallow only.
Point Category
Kidney Meridian Flow
Water · Yin · peak 5–7 PMQi flowing along the Kidney — direction of animation reflects channel flow.
My notes on KI 4