Generally speaking, the shelf structure is like a person's figure, and stippling is like a person's five senses. Have a good figure, no good facial features, people are not beautiful; With good facial features, people are not beautiful without good figure. Studying brushwork is to decorate your five senses; Exploring structure is like keeping in shape.
Or we can compare the relationship between brushwork and structure to the relationship between building materials and final engineering results. Good building materials must have good construction organization design, otherwise the final building project may be just a simple stacking of building materials. Colorful colors require skilled hands to draw beautiful pictures.
Brushwork, focusing on bit by bit painting; Structure, focusing on the overall layout.