All troubles of our life is due to our being in the world of post-heavenly qi , an arena where all things are in fact projected from the core ( the world of pre-heavenly qi ) and materialized , so they look real . Whenever we get problems/ troubles , we use our reasoning , in which embedded with drives, emotions, bias..,to study and solve them, "collapsing " them as what they are (as particles ,atoms, affairs..) . And, our lifetime becomes a frustrating process of getting troubles, working out solutions, then getting new problems..; post-heavenly qi world is full of annoyances as in it, we are entangled by space , time , logic , steps..,those Kantian categories which enable us to understand and act, now become things and matters as barriers; our world is really a world of blockades (事事有碍 ) ; on the other hand , in the arena of pre-heavenly qi where mindless Mind dominates, is a world free of blockades because the analytical mind is ousted ; the mindless Mind (== pre-heavenly qi ) also enables us to manipulate one or more exrea dimensions from the existing one , making it a world of no blockade (事事無碍 ) , therefore doing the non-doing is possible . For example , a 3-dimensional being can intervene the matters happened in the 2D world with ease . A 4D being can intervene events in our 3D world with ease. Qi, in essence, is that extra dimension opens to us.