Dui, like Xun, is one of the eight hexagrams made of a doubled trigram. Dui stands for the youngest daughter; its image is the smiling lake, and its quality is joy. Joy does not rest, as might well appear, on the softness that shows in the upper line. The quality of the soft or dark principle is melancholy, not joy. Rather, joy rests on the two strong lines within, which express themselves through the medium of softness.
True joy, then, rests on the presence within of firmness and strength that show themselves outwardly as soft and gentle.