The late heaven (King Wen) format of the Ba Gua is used as a hologram in abdominal acupuncture at the third and deepest level, which is referred to as the earth level. The trigram Li in the south is the fire element and treats the Heart and its paired Yang organ, the Small Intestine (SI). These organs can be treated by needling this area to a depth of between 1.00-1.5 or in larger subjects 2.00cun.
Moving in a clockwise direction the trigram Kūn (earth in the five elements/phases) is the Spleen and Stomach area and, for this reason, the elbow point (Ab 1) on the patients left is used to treat Excess and/or Deficient conditions of the Spleen.
Continuing around the trigram of Dui (lake) is the metal element, the area of the Lungs and Large Intestine (LI). This trigram houses St 25 (Tianshu) which is the front Mu of the LI and is often used to clear Heat from all areas. St 25 (Tianshu) is also used to treat asthma and other Lung conditions such as a cough. The Qian (heaven) trigram also treats Lung and LI conditions.
The trigram of Kǎn, water is situated at the north directly opposite the fire in the south, and it represents the water organs of the Kidney and Urinary Bladder. This area contains two of the most powerful Kidney tonifying points, Ren 6 (Qihai) and Ren 4 (Guanyuan).
Continuing around the trigram Gen (mountain) treats conditions of the upper Burner. Zhen (Thunder) is on the patient’s right and it represents the Gallbladder and Liver. The trigram of Xun (Wind) is the final segment and it represents the element of wood and therefore treats the Liver and the middle Burner. The elbow point (Ab 1) in this segment is used to treat conditions related to Liver Qi Stagnation