Aloha Qigongfriend,
The main thing is to feel the energy coming from the palms of your hands (that are facing your body throughout the exercise), clearing, brightening, and strengthening that beautiful energy column as they move up and down along it. So with that said, you can be interacting with it by assisting the movement of the front and back main channel energy flow direction (which is naturally happening anyway,and emphasized by your hand movement), or focus on interacting with the column as a whole.
There is a lot going on in this exercise, other than just working with the front and back channel.
Either way, you will be making a difference.
Much Love,
Shawn
