Dantian

Dantian (丹田; Pinyin: dāntián, Romaji: tanden) in traditional Chinese medicine is a center of qi, the vital life force.

Three main dantian are typically emphasized: the lower dantian, situated at the lower belly, called hara in Japanese; the middle dantian, at the level of the heart; and the upper dantian, at the forehead between the eyebrows or third eye. Jing (essence) is purified into qi (vitality) in the lower dantiam; qi is refined into shen or spirit in the middle dantium; and shen is transmuted into wu wei or emptiness in the upper dantium.