When we were toddlers, we normally drew pictures of stick men. o-<-< The lines apparently in those drawings are those imaginary lines for a person's ki (except for the head which is normally drawn as round) It rather looks more like this --<-< Well, you would think it may sound uber simplistic and probably laugh but it is an accurate representation of the lines of ki. It's better this way in a sense since you dont need to overcomplicate things. Also, it took me decades to realize (ie stickman) this was the case
but that it works as a model.