How to "see" the energy alignment?

Today, Michael Winkler of Germany suddenly "saw" the energy alignment on the body. This is part of the enlightenment of taiji learning. This is also part of the "entrance" to taiji. Now he is busy looking at many of the "masters" photos to "see" if there is energy alignment in their postures. Just what enabled him to have this ability? We will have to let him explain.