The characters and boats in the picture, the stars and lights in the starry night, and the sky and water are all in a "size contrast" relationship, which is a kind of contrasting beauty! The blue-toned night, the yellow-toned lights, and the twists and turns of the starlight reflected on the Rhone River, and the green, blue-green, and green-blue parts are the principle of "harmony" in artistic creation. In other words, it presents the beauty of harmony. As for the main blue tone itself in the entire painting, it is also gradually changing, full of single-tone level changes, which are called gradations in the principles of artistic creation, making the picture more lively. In the starry sky on the banks of the Rhone River, the bridge in the painting is located near Van Gogh’s yellow house in Yalle. He painted many works on the Rhone River. At this time, the starry sky and the late starry night of Saint Remy have Quite a big difference. His spirit was in an unstable state at the time. Perhaps because of this, he was able to incorporate his emotions into the painting so vividly when his sensibility transcended rationality. At this time, Van Gogh's heart was not at peace, because the paintings could not be confirmed by others, and his physical illnesses bothered him, so his anxiety and anxiety were clearly revealed in the paintings. He used short brush strokes, arranged in a spiral shape to express the subject of the painting. Van Gogh painted the stars and moon in the sky as if they were burning with brilliant light. The whole picture seemed to be shaking constantly because of the arrangement of the short brushstrokes and the contrasting colors of blue and orange. Kind of strong contrast!