REN24 Chengjiang

Reviewed by · Licensed Acupuncturist & TCM Physician · Last reviewed June 2026

REN24 (Chengjiang, “Chengjiang”) is the Ghost Point point of the Conception Vessel Meridian. It is located on the midline of the chin, in the center of the mentolabial groove, which is the depression directly below the lower lip. It expels wind from the face, alleviates swelling and pain, calms the spirit, and treats local disorders of the mouth and jaw.

Location

On the midline of the chin, in the center of the mentolabial groove, which is the depression directly below the lower lip.

Needling

Subcutaneous insertion, directed superiorly towards the gums, 0.3-0.5 cun.

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TCM functions

Expels wind from the face, alleviates swelling and pain, calms the spirit, and treats local disorders of the mouth and jaw..

Indications

Facial wind, lockjaw, mouth sores, deviation of the mouth and eye, facial swelling, toothache, gum pain, excessive salivation, sudden loss of voice, epilepsy with vomiting of foam, shivering and chattering of the teeth, aversion to cold, dim vision, sweating, thirst, semi-paralysis, horse-yellow jaundice, acute epidemic jaundice, infantile lockjaw from umbilical wind..

Ghost Point

Clinical notes

Chengjiang is a primary point for expelling wind from the face, making it essential for treating facial paralysis, trigeminal neuralgia, and lockjaw. Its location and connection to the Stomach and Large Intestine channels also make it effective for local issues like toothache, gum pain, and mouth sores. As a 'Ghost Point,' it has applications for calming the spirit in cases of epilepsy and mania.

On the Conception Vessel channel

REN24 is one of 24 points on the Conception Vessel Meridian. Nearby points:

REN16REN17REN18REN19REN20REN21REN22REN23

Frequently asked questions

Where is REN24 located?

REN24 (Chengjiang) is located on the midline of the chin, in the center of the mentolabial groove, which is the depression directly below the lower lip.

What is REN24 used for?

REN24 expels wind from the face, alleviates swelling and pain, calms the spirit, and treats local disorders of the mouth and jaw. Common clinical indications include facial wind, lockjaw, mouth sores, deviation of the mouth and eye, facial swelling, toothache, gum pain, excessive salivation, sudden loss of voice, epilepsy with vomiting of foam, shivering and chattering of the teeth, aversion to cold, dim vision, sweating, thirst, semi-paralysis, horse-yellow jaundice, acute epidemic jaundice, infantile lockjaw from umbilical wind.

How is REN24 needled?

Subcutaneous insertion, directed superiorly towards the gums, 0.3-0.5 cun. Caution: The Zhen Jiu Ju Ying warns against continuous moxibustion without a break, as it may damage the Stomach channel and prevent the wind condition from resolving. It advises resting for 4-5 days after 49 cones before continuing.

Which meridian is REN24 on?

REN24 is a point on the Conception Vessel Meridian (Rèn Mài).

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⚠️ This page is for general education and is not medical advice. Acupuncture is a traditional practice; evidence varies by condition and study quality, and individual results differ. It does not replace diagnosis or treatment by a licensed professional. Always consult a qualified acupuncturist or physician.