While doing Moving of Yin & Yang I have been visualizing energy balls that are similar to the ones shown on the video when the two main energy channels are being illustrated.

I am moving the balls at the same speed and in the same position, or you could say in tandem with my hands. In other words the balls are moving as shown on the video as described above, up the back of the column and down the front.

Is this correct or should I move the energy some other way?