Moreover, surrealist art is continuously created in the twenty-first century, and the artistic skills that were created by surrealist pioneers are still affected the twenty-first century. For instance, surrealist artists have created a series of painting techniques that are specifically used in surrealist artworks, such as automatic drawing and frottage. More specifically, André Masson created a surrealistic painting technique in the year 1924 named the automatic drawing, which requires the artist excludes the intentional arrangement of rationality and draws a series of lines. Then, the artist creates the further images which based on these random lines. Afterwards, in the year 1925, Marx Ernst invented a new painting skill named frottage.