Lines, most of the images is not the original artist to represent the two images of the realm. For example, Chinese painting, described an egg-shaped line of said person's face, in fact, people face around there is this line, this line is the boundary of the face and background. Picturesque L-shaped

Lines are not undertaken by the original artist, is used to represent the introduction of the realm. For example, in painting an egg-shaped translucent line that a person's face, in fact around the face hole and the wire, the wire is the line between face and background. And there are also picture A