REN24 Container of Fluids

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

REN24 (Chengjiang, “Container of Fluids”) is the Meeting point of Ren & ST, LI, SI point of the Conception Vessel Meridian. It is located on the anterior midline, in the mentolabial groove, midway between the lower lip and the chin. It eliminates wind, benefits the face, and regulates the Ren meridian.

Location

On the anterior midline, in the mentolabial groove, midway between the lower lip and the chin.

Needling

Insert obliquely upwards 0.2-0.3 cun.

TCM functions

Eliminates wind, benefits the face, and regulates the Ren meridian.

Indications

Facial paralysis, facial edema, toothache, pain in the neck, salivation, mental disorders.

Meeting point of Ren & ST, LI, SI

Clinical notes

Ren 24 is a primary point for facial paralysis, deviation of the mouth, and other wind-related conditions affecting the face. Its location at the mentolabial groove makes it effective for local issues such as toothache and gum swelling, especially in the lower jaw. As a meeting point with the Stomach, Large Intestine, and Small Intestine meridians, it helps regulate fluids and clear heat from the face. It is often paired with ST4 and ST6 for Bell's palsy.

On the Conception Vessel channel

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

Frequently asked questions

Where is REN24 located?

REN24 (Chengjiang) is located on the anterior midline, in the mentolabial groove, midway between the lower lip and the chin.

What is REN24 used for?

REN24 eliminates wind, benefits the face, and regulates the Ren meridian. Common clinical indications include facial paralysis, facial edema, toothache, pain in the neck, salivation, mental disorders.

How is REN24 needled?

Insert obliquely upwards 0.2-0.3 cun.

Which meridian is REN24 on?

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

Interactive body mapConditions & evidenceFind an acupuncturistTCM glossary
⚠️ 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.