The second pulse of Ren Du is not the kind of Ren Du that the landlord and the brothers on the third floor said. In the practice of cultivating truth, it should be called meridian Sunday. It just opens the perceptual meridians on the body surface, which is the kind of small Sunday in general qigong. After opening it, it has little effect except that it feels stronger and has a sense of circulation. The real second meridian of Ren Du Meridian is on both sides of the spinal cord, that is, the approximate position of sympathetic nerve and parasympathetic nerve. In Taoist practice, this is called fire, water, fire and Sunday, and it belongs to practicing the true qi and getting through the second pulse of Ren Du. First of all, it is necessary to cultivate the air cavity of congenital yang by building a foundation for a hundred days, and then it will start by itself and cross three levels, which are actually the ganglia of sacral curvature, thoracic curvature and cervical curvature. As we all know, Ren Du and Er Mai are relatively smooth. With the reduction of congenital yang and the cultivation of acquired temperament, it is no longer just the second pulse of Ren Du. When there are three physiological bends in occlusion, a heat flow flows from Dantian to the seabed. After breaking through the three levels in a special way, it naturally rises overhead and gathers into a stream. At this time, I feel that my head is like a pot of cold water pouring down the midline of the palate and flowing into the tip of my tongue. It feels full of sweetness. This is the so-called sobering taste in tantric Buddhism. After involuntarily swallowing Gan Qiong into my mouth, I consciously felt something fall on my heart, and I only heard a slap. Diaphragm vibration cold straight into the five zang-fu organs, and finally fell to the abdomen, cold current and heat flow meet here, I feel Shu Tai's true qi running straight to my limbs, and I am in a trance. After staying in this realm for a period of time at the time of customs clearance, I suddenly felt that my genitals shrank in at the bottom of the sea. At the same time of tight breathing, my nose and mouth seemed to suddenly stop, only my navel fell down together, and then I entered a fixed place, unaware of myself in this kind of unexamined and unburdened realm. After a while, I seemed to get my breath back and my meaning was restored, but I looked at my watch for nearly an hour and still didn't finish it. For the next few days, I was in a state of diarrhea. I pulled it up to five times a day, which made me stink and thin, but after pulling it, my body became lighter and I felt more and more acute. Finally, I pulled out a very black and smelly thing, so I didn't have diarrhea.
This is the author's discussion according to his own feelings. Some people will say that I am bragging. Believers are confident, while skeptics doubt themselves.