On the abdomen, from the chin, the length of the head is multiplied by the position of 0.6 18 (Tang Yin point between the eyebrows).
On cloudy days, the length of the trunk is multiplied by the position 0.6 18 (the midpoint of the nipples) from the lower yin.
Lower abdomen, from the foot, the height is multiplied by the position of 0.6 18 (Guanyuan point, three inches below the navel).
The position of Tian Dan can be divided into three positions: upper position, middle position and lower position. Tang Yin's eyebrows is Ueda Chan, also called "Mud Pill". Juque point in the heart and ZhongZheng point in the chest are ZhongWan days, also known as "JiangGong". Xiadantian has a considerable volume in the lower abdomen, including Guanyuan, Qihai, Shenque and Mingmen.
There are also views that the position of zhongwantian is in the middle of the human body, that is, the Shenque point deep in the navel; Xiadantian is a local household, located in the perineum of human body, and Houdantian is the Mingmen point of human body. In a word, all the above parts are concentrated and vivid parts of Qi movement. People often say that Tian Dan generally refers to Xiadantian.
Extended data:
The role of Tian Dan:
1. Shangdantian is on the route of Du meridian and belongs to Yang meridian. Therefore, Shangdantian belongs to Yang, which is the place of accumulation, the place of hiding gods, the nerve center in charge of thinking and conscious activities, and the main part of practicing meditation. The function of Shangdantian is to exercise the nervous system, control one's own conscious activities, balance the regulatory function of the central nervous system, and inhibit the overall metabolic function, thus exerting the energy storage function of the body.
This will help the human body to cultivate self-cultivation, accumulate energy, give full play to its potential, fight diseases and achieve the effect of fitness. So, after practicing, you will feel stronger, more energetic and more comfortable.
2. Zhongdantian is located at the point in the chest, where qi meets. When acupuncture is used to treat diseases, all diseases related to "Qi" are taken from this point.
All diseases with stagnation of middle qi, such as proctoptosis, gastroptosis, nephroptosis, uterine prolapse, menorrhagia, qi deficiency asthma, etc. It can be cured by observing the abdomen. However, when staying in the abdomen, the mind should not be too heavy, and it should be like nothing, so as not to cause discomfort such as chest tightness and rib fullness.
3. Xiadantian is located in the lower abdomen, which is the root of human life and the place where vitality accumulates. Inducing qi and stimulating human potential is the main part of exercise.
In practice, the intentional defense activities are mainly in Xiadantian, and its function is to stimulate the energy substances of the human body through Xiadantian's intentional defense, so as to adjust and balance the physiological functions of the human body, promote the metabolism of the body, invigorate the functions of viscera, enrich the vitality, prevent diseases and resist aging, and then achieve the effect of prolonging life.
References:
Baidu encyclopedia-dantian