This is a great drill to start to get the "mind/intent leading the ki" piece going as well as using the breath to start to connect the whole body together (don't do too much too fast at first as there's some risks there, best is someone can show you). Add being able to connect centers and direct ground/gravity (earth/heaven) into somebody using the same intent/mind leading and you've got some of the very basics/foot in the door stuffs to IS.