What is freehand drawing?

Freehand brushwork refers to a way of artistic painting, in which there are no other painting tools except brushes and pigments (such as rulers, triangles, protractors, compasses, curved boards, etc.). ) are all used, and the painter draws freely with his bare hands according to his vision, feeling and imagination of the scenery, thus expressing the scenery or expressing the painter's feelings. At present, there are Chinese paintings, cartoons, sketches, ink paintings, watercolors and watercolors. So good freehand brushwork is the basis of drawing all kinds of paintings.