Acupuncture Point Chengman (ST20)
Location:
Supine position; 5 cun above the level of umbilicus, 2 cun apart from the midline of the abdomen laterally .

Function:
Regulating the flow of qi, and normalizing function of the stomach  and spleen.

Regional Anatomy:
Skin-subcutaneous tissue-anterior sheath of rectus muscle of abdomen-rectus muscle of abdomen.
In the superficial layer, there are the lateral and anterior cutaneous branches of the anterior branches of the 6th to 8th thoracic nerves of the superficial epigastric vein. In the deep layer, there are the branches or tributaries of the superior epigastric artery and vein and the muscular branches of the anterior branches of the 6th to 8th thoracic nerves.

Indications:
Gastric pain, abdominal distension, vomiting, and anorexia.

Prescription:
Combined use with ZusanliST36 (Zusanli (ST36) He-Sea Point) for treatment of gastritis and gastric ulcer; and with NeiguanPC6 (Neiguan (PC6) Luo-Connecting Point the Eight Confluent Point) for treatment of neurogenic vomiting.

Methods:
Insert the needle perpendicularly 0.5-1 cun deep; needling response: local sensation of distension and soreness; moxibustion: using 3-5 moxa-cones, or mild moxibustion for 15 min.
Note:
Don't puncture deeply the point on the right side, or else the needle would penetrate the posterior wall of vagina musuli rectiabdominis-the transverse fascia-the extraperitoneal axungia-the parietal peritoneum-the peritoneal cavity-the visceral peritoneum and the liver by its tip and cause an injury to liver. Don't puncture deeply the point on the left side, or else the needle would penetrate the posterior wall of vagina musuli rectiabdominis-the transverse fascia-the extraperitoneal axungia-the parietal peritoneum-the peritoneal cavity-the visceral peritoneum and the stomach by its tip and cause an injury to stomach.