What are the characteristics of traditional art and modern art?

1. Different visual perception methods have different concepts of time and space, such as Picasso's analytical cubism, avignon's girl, guitar glass and bottle, futurism, and the dynamics of a dog on a chain.

2. Different means of expression, such as collage and direct quotation of everyday objects, common means of pop art, and Fountain of Toussaint.

3. Different specific concepts, such as expanding the concept of "truth" and pursuing psychological truth.

4. The introduction of philosophical psychology such as surrealism and metaphysics has obvious influence on Freud's subconscious theory. Freud's premonition of Civil War, Eternal Memory and Chilico's Melancholy and Mystery of a Street.