Conception Vessel is a place at the center line of the body that is the "main line" for all of the Yin energy of the body. It runs from the pelvic bone up to the bottom lip, but inside of the mouth. It is also often called the "sea of yin." Conception Vessel has no relation to any element or time of day as meridians do. There are 26 points on the vessel many of which are Alarm Points. The image above maps the points.