Describing the exercises verbally is hard to do. I will try to describe a couple of them. Example: Face your partner with feet shoulder width apart, toes aligned with your partner's toes. Raise arms to chest level, shoulders and elbows relaxed, each "holding ball" so that the backs of your hands face the backs of your partner's hands (not touching the backs of the partner's hands, though). Turn your waist slightly right as you draw your right palm toward you and extend your left hand. As you do this, your partner withdraws her right hand and extends her left hand. At the point of extension (do not lock your elbow) all four hands are in one line at the center. You now withdraw your left hand and circle it over your right hand as your waist turns left and you extend your right hand. As you do this, your partner extends her right and withdraws her left. Basically, you're tracing circles at the centerline, reeling silk as your partner "adheres" to your movements (and you adhere to your partner's movements) without actually touching. Every one in awhile, reverse directions. Another example: Face your partner, feet shoulder width apart, knees soft. Raise your arms to chest level, this time with palms facing each other, chest concave, back convex. Your partner does the same. Now gently and slowly, but feeling the energy inside your arms, move (expand) the palms apart until they are slightly outside the line of your body. Your partner does the same - moving in tandem, reeling silk, tracing each other's movements. Then move ("push") your palms toward each other until they are 4" - 6" apart. Then expand again. Continue this exercise as long as you wish - make sure you and your partner are in synch - head and neck erect, sink shoulders and elbows, keep lower back straight, breathe into the belly (sink chi to the dan tien), knees soft, weight falling into the ground (but not limply).
Hope this gives a glimpse.