What are the classifications of sketches?

(1) Sketch is a kind of plastic arts, which belongs to the category of painting and generally refers to monochrome painting.

(2) Sketch is based on purpose and function; Generally, it can be divided into two categories: creative sketch and practice sketch.

(3) Sketch is divided into still life, animal, landscape, portrait and human sketch.

(4) Sketch can be divided into pencil, charcoal pen, pen, brush, ink and wash, chalk or sketch interspersed with two tools, and so on.

(5) Sketch From the concept of painting time, sketch can be divided into long-term sketch, sketch and dictation.

(6) Sketch From the perspective of painting tradition, sketch can be divided into two types: China's freehand sketch (commonly known as "line drawing") and western realistic sketch.