Well you should do your own homework so you can learn, but I will give you some tips as a start.
Cézanne is a terrific modern artist considered by Picasso the father of modernism. He gives his objects geometric shapes. This is really important because his works starts the abstract movement. He dies and this style is picked by Picasso.
Cézanne can be said to form the bridge between late 19th century Impressionism and the early 20th century's new line of artistic inquiry, Cubism.
This painting is painted with thick, flat surfaces, yet with a weight reminiscent of Courbet.