Re: The two body/mind concepts of Japanese Martial Arts.
I think one of the things you're talking about, is what some martial artists call the 'second man', or, that there is a second person shadowing you, close to what some native indians call your 'second', but that's another story.
Man Ming is actually located on the spine, if you had a spiritual flashlight and shined it through your belly button until the light hit your spine, that would be man ming. It is actually one of the four dan tings. The aikido one point is actually the point of original chi, which is...if you make your hand flat, including your thumb, and then hold it below your belly button, now you have to make three fingers width inside your body, that is the actual one point that all aikidoka should be using.