Line drawing, the so-called painting produced by assembly line, is a painting without the creative thinking of the author. Line drawing is like a factory producing parts, and only one person can complete each process. If a worker paints this leaf, he can only paint, no matter how many paintings he has painted or how many years he has painted.

Original works are works that have been thought and innovated by the author. The original is an angry painting, bearing the painter's different expectations of life. According to the painter's fame and creative intention, hehe, the original has room for appreciation.