Tai Ji is such a different kind of martial art, I find the categorization of "martial art" to be odd.  Then, when I begin to understand why one makes certain moves, ah ha!  (that lightbulb goes on)

Tai Ji is the concept of the soft overcoming the hard, thus the whole idea is a softly flowing feel to ones whole body.  Relaxed and yet alert, present and ready. 

Quan literally means fist.  As a martial art, Tai Ji is definitely more fist oriented than say Tae kwon do (the Korean martial art which was/is very popular in the U.S.).

So on Day 4, our laoshi (teacher) was back and lead us through the first two forms again, finally adding a third ... or maybe just the flow into the third!: always reiterating our posture, always reinforcing our form.

The first form has four steps, the second has three and then we learned this movement - a flowing movement away and back to where we just were with the hands.

I can't think of any other way to express the movement.

Anyway, time to practice again.