I know that in the advanced levels of Meditation, Tai Chi and Qi Gong, the tiniest variations in the structure of a movement can have tremendous ramifications and make or break a movement. I happen to do Taoist Sitting meditation a lot, and I noticed no one ever mentioned which hand is meant to go on top or why. I don’t know how important this is, but I’m immensely curious and I have had no luck finding a teacher who knows. 10 points for anyone who can provide a reasonable explanation or a credible source!