What type of acupuncture point is categorized under Sea of Blood and is positioned 3 cun inferior to ST-36?

The point categorized under the Sea of Blood and positioned 3 cun inferior to ST-36 is indeed ST-37, also known as the "Shangjuxu" point. This point is significant as it falls within the category of the Sea of Blood, which refers to points that have a specific relationship with the body's blood and circulation.

ST-37 is located on the anterior aspect of the leg, specifically 3 cun below ST-36 (Zusanli), and is an important point for influencing the lower digestive tract. It has actions that can help with various gastrointestinal issues and is often employed in treatments involving the spleen and stomach.

In Traditional Chinese Medicine, the classification of acupuncture points into categories such as the Sea of Blood emphasizes their function and the physiological areas they affect. By understanding that ST-37 is part of the Sea of Blood, practitioners can appreciate its role in enhancing blood circulation and nourishing the body, especially in cases of deficiency or stagnation.