Soviet educator Dremov said that "not all children can write poetry and sing, but all children can draw". Children will scribble spontaneously from 14 months, and this behavior will generally last until 3-4 years old. Because children's "painting" behavior at this time is unsystematic and disorderly, we call it graffiti. Painting is just a language way for children to express their feelings. We don't have to train children to be painters, walk into their graffiti world, feel the joy and artistry of children's graffiti and protect them. Enough!