This website has a more detailed introduction.

Cezanne, the father of modern painting, can bear such a resounding name because he changed the way of thinking in painting creation. Before him, classical painting has been deeply rooted in people's hearts. Simply put, this is to copy reality, use light and shadow and lines, and copy its true colors. All stories based on religion and literature have become the material that painters appreciate. Where is my lovely self? Where is people's subjective spiritual consciousness? Cezanne looks for, discovers and expresses himself from that seemingly beautiful but "bound" thinking cage. He emphasized the objective object of structure. The so-called structure is the painter's self-cognition structure, where there is his subjectivity and his id thinking. For example, Cezanne sees that women's arms and thighs are cylinders, and their breasts and abdomen are spheres. He likes three-dimensional geometric composition, not simple truth. The female body he painted has what he thinks is youth, strength and beauty.