For example, Ai Qing's Children Cutting Grass in Selected Poems embodies this point.
Red sunset, green grass, golden sickle, bright colors; Children (bamboo baskets, sickles) are points, the route of mowing grass is lines, the grassland is surfaces, and the composition is harmonious and rich; The whole poem contrasts the smallness of children with the spacious and beautiful atmosphere, and the feelings are touching.
In poetry, "red", "grassland (green)" and "golden light" are colors; Cutting grass, bamboo baskets and sickles, moving slowly from one side to the other, are dotted lines in the picture; "Grassland" and "sunset" are the background of composition. Through the combination of these images, the author presents the picture of children mowing grass to people. Answer according to this understanding.