Stomach MeridianST40

Fenglong 豊隆

For reference only · not a substitute for diagnosis or treatment

Short answer

8 B-cun above the prominence of the lateral malleolus, at the outer edge of the tibialis anterior.

Luo-connecting point (to the Spleen channel)

See it in 3DRotate the body and peel back the skin to see the bones and muscles beneath.
Open the 3D Acupoint Map →

🖼See it in pictures

Fenglong — ① Where on the body? — **① Where on the body?**

Fenglong — Textbook view — skin on the left, muscle and bone underneath on the right — **Textbook view — skin on the left, muscle and bone underneath on the right**
Location and structures come from our 3D model; only the drawing style was refined with AI. Labels are added by us.

Fenglong — ③ Under the skin — **③ Under the skin**
Tibialis anterior muscle · Extensor digitorum longus · Extensor hallucis longus

Rendered straight from the 3D model at the computed location. The glowing ring marks Fenglong.

On this page

Where is Fenglong?
How do I find it on my body?
Before you press
How has it been used traditionally?
FAQ

1Where is Fenglong?

8 B-cun above the prominence of the lateral malleolus, at the outer edge of the tibialis anterior.

It is one middle-finger breadth outside ST38.

It is on the front-outer lower leg.

Beneath the point

Tibialis anterior muscle · Extensor digitorum longus · Extensor hallucis longus

Our 3D measurement · In our 3D model: 8 cun (184.3 mm) above the outer ankle bone, on the lateral edge of the tibialis anterior; 3.5 mm height difference from ST38.

2How do I find it on my body?

Take the popliteal crease (level with the kneecap's lower tip) to the lateral malleolus as 16 B-cun.
Mark 8 B-cun above the malleolus, the halfway level.
At that height, lift the foot to raise the tibialis anterior and press its outer edge.

Check · one middle-finger breadth outside ST38.

What is a “cun”?

A cun is a body-scaled unit of length. The precise way is to divide a bone length into equal parts (proportional bone cun); finger widths are a quick estimate.

📖 Words explained

extensor digitorum longus: A muscle running from the outer front of the shin across the top of the foot to the 2nd–5th toes. Lift your toes and four tendons fan out on the top of the foot.
lateral malleolus: The bump on the outer side of the ankle, the lower end of the fibula. It sits a little lower and farther back than the inner ankle bone.
tibialis anterior: The thick muscle running down the front of the shin, just outside the tibia. Lift the top of your foot and it hardens on the front of the shin, with a thick tendon standing out at the inner front of the ankle.
popliteal crease: The horizontal crease at the back of the knee when it is slightly bent. It is the starting line for measuring lower-leg points.

3Before you press

⚠ Do not press when

Avoid broken or swollen skin and press only to a comfortable level.
Acupressure is not a substitute for medical care.

4How has it been used traditionally?

In classical theory this is the Luo-connecting point, where a branch leaves the Stomach channel for its paired Spleen channel (Lingshu, ch. 10) — a historical classification, not a claim of effect.
The name joins feng (abundant) and long (bulging): a full, rounded spot of muscle.

From traditional texts — not a claim of effect.

?FAQ

Where exactly is Fenglong?

8 B-cun above the prominence of the lateral malleolus, at the outer edge of the tibialis anterior. It is one middle-finger breadth outside ST38. It is on the front-outer lower leg.

How do I find Fenglong?

Take the popliteal crease (level with the kneecap's lower tip) to the lateral malleolus as 16 B-cun. Mark 8 B-cun above the malleolus, the halfway level. At that height, lift the foot to raise the tibialis anterior and press its outer edge. one middle-finger breadth outside ST38.

What should I watch out for?

Avoid broken or swollen skin and press only to a comfortable level. Acupressure is not a substitute for medical care.

← PreviousXiajuxu · ST39 Next →Jiexi · ST41

Sources

Location: WHO Standard Acupuncture Point Locations in the Western Pacific Region (2008), p. 66
Standard comparison: Chinese national standard GB/T 12346-2021 (Nomenclature and location of meridian points)
Korean anatomical terms and locating tips: KMCRIC Standard Acupoint DB (Korea)
Classification source: Lingshu ch. 10 (Jing Mai, connecting vessels) · Zhenjiu Jiayi Jing vol. 3 (Siku Quanshu edition)
Classification cross-check: AcuAtlas dataset (CC BY 4.0)

Positions computed from the WHO standard locations (2008) on Z-Anatomy (CC BY-SA 4.0) · BodyParts3D © DBCLS. For reference only — not a substitute for diagnosis or treatment. See a clinician if you are unwell.