Huiyin and Perineum Coordination in Qigong

After you have practiced the abdominal exercises for about three to five weeks, you may feel your abdomen get warmer every time you practice. After continued practice, the abdomen will start to tremble and shake each time you start the fire. This means qi has accumulated at the lower dan tian and is about to overflow. At this time you should start to coordinate your breathing and abdominal movement with the movement of your huiyin (Co-1) (literally "meet the yin") cavity and perineum to lead the qi to the tailbone (weilu cavity).

The technique is very simple. If you are doing the Buddhist breathing, every time you inhale, gently expand your huiyin and perineum. When you exhale, you hold them up gently. If you are doing the Daoist breathing, the movement of the huiyin and perineum is reversed: when you inhale, you gently hold them up, and when you exhale, you gently push them out. This up and down practice with the perineum is called "loosen the perineum" (song gang) and "close the perineum" (bi gang). When you move your huiyin and perineum, you must be relaxed and gentle and must avoid all tension. If you tense them, the qi will stagnate there and will not be able to flow smoothly. Click to learn how Chinese medicine treats Atrial Fibrillation.

The trick of holding up and loosening the huiyin and perineum is extremely important in nei dan qigong. It is the first key to changing the body from yin to yang and from yang to yin. The bottom of your body is where the conception (yin) and governing (yang) vessels meet.