SP1
Yinbai(SP1, 隐白) is an acupuncture point in the meridian named Taiyin Spleen Meridian of Foot. Yinbai is the Jing-Well point of the spleen.
Meaning
Yin, hidden; bai, white
The point is in a hidden region, where the color is white.
Location
On the medial side of the big toe, about 0.1 cun posterior to the corner of the nail
Indication
Irregular menstruation, indigestion, mental disorder.
Method
Superficially 0.1 cun or peck into bleeding.