Chengjiang Point (RN-24 / Receiving Fluid, also known as Tianchi, Xuanjiang, Guishi)
Discover the exact location and acupressure method for Chengjiang (RN-24 / Receiving Fluid). Learn its benefits for stroke, facial paralysis, drooling, and toothache – the meeting point of Ren and Stomach – plus classic combinations for comprehensive treatment.
Indications
Stroke with coma, facial deviation (facial paralysis), drooling, stiff painful head and neck, toothache, facial swelling, mouth deviation, involuntary lip twitching, diabetes (thirst), urinary incontinence, and sudden loss of voice (aphonia).
Precise Location
On the face, at the center of the mentolabial groove (between the lower lip and chin), in the depression.
Location Method
Sit upright with the head leaning back. On the face, at the center of the mentolabial groove directly below the lower lip – firm pressure produces a distinct sore and distending sensation.
Massage Method
Massage: Press and knead with the thumb. Press and knead Chengjiang with the thumb about 200 times, or for 3–5 minutes daily, to treat drooling and facial paralysis. Therapeutic actions: Revives the spirit and opens the orifices, dispels wind and unblocks the collaterals, reduces swelling and relieves pain, and astringes fluids and stops drooling.
Compatibility
Stiff painful head and neck, toothache: Combine with Fengfu (GV-16). Stroke with coma: Combine with Shuigou (GV-26), Neiguan (PC-6), and Yongquan (KI-1). Facial deviation (facial paralysis): Combine with Dicang (ST-4), Jiache (ST-6), and Hegu (LI-4). Drooling: Combine with Lianquan (RN-23) and Dicang (ST-4). Diabetes and urinary incontinence: Combine with Guanyuan (RN-4), Shenshu (BL-23), and Sanyinjiao (SP-6).
Efficacy & Actions
This point belongs to the Conception Vessel (Ren Mai) and is the meeting point of the Ren Mai and the Foot Yangming Stomach Meridian. It revives the spirit and opens the orifices, dispels wind and unblocks the collaterals, reduces swelling and relieves pain, and astringes fluids and stops drooling. It is a commonly used key point for treating facial, oral, and mental disorders. First documented in Zhenjiu Jiayijing. "Cheng" means to receive or bear; "Jiang" refers to the fluids of the mouth. Located in the depression below the lower lip, this point receives the fluids of the mouth – hence the name Chengjiang (Receiving Fluid). It is also known as "Tianchi," "Xuanjiang," and "Guishi."
