Ernst invented the rubbing method in 1925, that is, rubbing paper on a textured surface with a famous ink stick to create various patterns such as wood grain, warp and weft of cloth yarn, leaves and veins. He believes that this can minimize the initiative of the creator, so it is "really equivalent to the well-known thing of' automatic writing'". In the book Beyond Painting, he described it like this: "I stared excitedly at the ditch dug on the floor after thousands of scrubbing, and I was moved by a feeling of intoxication." After that, I decided to study the symbolic meaning of this enchanted feeling. In order to help my ability of meditation and creating hallucinations, I randomly placed some graphite-printed papers on the board as a set of sketches. Gazing at the sketch drawn in this way carefully ... I was shocked by the sudden change of my visual ability and the illusion of a series of contradictory images formed by overlapping. " In addition to rubbing, he also used the method of transfer printing, that is, rubbing on the wet canvas to make the pigment form a rough texture on another plane. In this way, artists can get rid of rational control and freely combine accidental patterns, thus obtaining works with unique value. This kind of work has strange and vague shapes and is full of visual appeal.
Two children frightened by the nightingale, written in 1924, are a combination of wood collage and oil painting. Like many of his works in this period, it is puzzling. We saw a house made of wood and a fence with left and right frames respectively. The fields, the sky and the distant buildings make up a small world that looks very beautiful. In this small world, the doorbell is exaggerated so much, but the hand can never reach it. The nightingale will bring a beautiful song, but it will scare two children. Obviously, we can't understand and explain this. This is a dreamland with no characteristics. Perhaps, it also alludes to the artist's experience when he was young: his little sister was born and his pet parrot died. This sense of magic in the past, coupled with some unintentional knowledge now, makes the work feel strange.
Ernst left the surrealist movement on 1938. Later, he focused on sculpture and created many excellent sculptures.