Seurat spent two years creating this large canvas using pointillism, a technique where tiny dots of color combine optically to form the image. The painting depicts Parisians at leisure on an island in the Seine, showing the growth of public leisure spaces in industrializing France. The accumulation of thousands of individual points to create abundance relates to hexagram 42's theme of increase. This is Yì (益), Increase, the hexagram that appears when growth comes from below to benefit what lies above. The character shows liquid overflowing a vessel, abundance spilling outward. The trigram structure reverses the previous hexagram: Wind (Xùn) above Thunder (Zhèn), gentle penetration riding on arousing movement. Seurat's technique mirrors this structure—the gentle, persistent application of individual points creates the thunderous whole, each dot contributing to collective luminosity. In Zhou Dynasty agricultural divination, this hexagram appeared at spring planting when earth's stored energy rises to benefit the growing crop. The counsel addresses not sudden windfall but systematic augmentation, increase through proper method. The Judgment text declares: "Increase. It furthers one to undertake something. It furthers one to cross the great water." The text promises that this is a time when effort multiplies effect, when investment yields return. Seurat invested unprecedented labor in this work—preliminary sketches, color studies, the meticulous dot-by-dot construction on a canvas nearly seven feet tall and ten feet wide. The painting depicts the new leisure of industrial Paris, where the working week's compression created the Sunday afternoon, where public parks and river islands became spaces of recreation. Increase manifests in the proliferation of figures, the accumulated light, the expansion of public space. Song Dynasty commentators noted this hexagram appears when small contributions from many sources create collective benefit, like thousands of dots creating unified luminosity. The Image Text observes: "Wind and thunder: the image of Increase. Thus the superior person, seeing what is good, imitates it; having faults, corrects them." Thunder provides the arousing force; wind distributes its benefit gradually and widely. Seurat's Neo-Impressionist technique distributes pure color across the canvas, allowing the eye to mix what the palette keeps separate. In the I-Ching sequence, Yì follows Sǔn (decrease): after reduction to essentials comes the time to build again, adding deliberately what serves growth. The Sunday afternoon expands through accumulation of small pleasures—each parasol, each conversation, each reflection on water a point in the larger field of leisure.