Intersecting point: foot yangming and conception vessel.

bubble_chart Etymology

"Cheng" (承), to receive or hold; "jiang" (漿) refers to liquid or water. When liquid enters mouth, lower lip receives it. The acupoint is located in the depression of lower lip. Shiming‧Shi Xingti (Explanation of Names‧Explanation of the Body): "Below mouth is called Chengjiang, as it receives liquid."

bubble_chart Location

Chengjiang (CV24) acupoint
(adapted from "Meridians and Acupoints")

• Zhenjiu Jiayi Jing: "In front of chin, below lip";
• Zhenjiu Dacheng: "In the depression below lip ridge";
• Donggong Anmo Mijue: "0.5 cun below lip, in the exact center".

bubble_chart Anatomy

• Muscles: between orbicularis oris muscle and mentalis muscle.
• Nerve: branches of facial nerve and mental nerve.
• Vessels: branches of inferior labial artery and vein.

bubble_chart Manipulation

Insert perpendicularly 0.3~0.5 cun, or horizontally toward both sides 0.3~1 cun. Moxibustion is generally not applied.

bubble_chart Efficacy

Disperse wind, benefit mouth and teeth.

• Classical: crooked mouth, tight lips, toothache, mouth sores, facial swelling, stiff neck and headache, epilepsy, persistent epistaxis, blurred vision, consumptive thirst, dark yellow urine, incontinence of urine.
• Modern: facial palsy, oral ulcer, drooling.

bubble_chart Combinations

• Persistent epistaxis: Chengjiang (CV24), Weizhong (BL40).
• Blurred vision: Chengjiang (CV24), Qianding (GV21), Tianzhu (BL10), Naokong (GB19), Muchuang (GB16).
• Headache, stiff neck, and toothache: Chengjiang (CV24), Fengfu (GV16).
• Mouth sores: Chengjiang (CV24), Laogong (PC8).