“Dantian, dan t’ian, dan tien or tan t’ien is loosely translated as “elixir field,” “sea of qi,” or simply “energy center.” Dantian are the Qi Focus Flow Centers, important focal points for meditative and exercise techniques such as qigong, martial arts such as t’ai chi ch’uan, and in traditional Chinese medicine.
Lower dantian (下丹田, Xià Dāntián): below the navel (about three finger widths below and two finger widths behind the navel), which is also called “the golden stove” (金炉 pinyin: Jīn lú) or the namesake “cinnabar field” proper, where the process of developing the elixir by refining and purifying essence (jing) into vitality (qi) begins.
Middle dantian (中丹田, Zhōng Dāntián): at the level of the heart, which is also called “the crimson palace,” associated with storing Spirit (Shen) and with respiration and health of the internal organs, in particular the thymus gland. This cauldron is where vitality or Qi is refined into Shen or spirit.
Upper dantian (上丹田, Shàng Dāntián): at the forehead between the eyebrows or third eye, which is also called “the muddy pellet”, associated with the pineal gland. This cauldron is where Shen or spirit is refined into Wu Wei or emptiness.”