Manet is the originator of Impressionism, why is it said that his creation of Impressionism is an accidental move?

I don't think this is the right way to interpret it. Manet's creation of Impressionism was not an accident, but a breakthrough after he was tired of classical art. Manet began to study under the academy, because the art of painting at that time followed the classical tradition of painting. They studied the works of the former masters and copied their styles every day, so the art schools at that time were very traditional and old-fashioned. Resisting students had their own ideas, they thought that the best art the top art was Michelangelo and Leonardo da Vinci, the late Renaissance artists. So students learning to paint at the academy at the time spent their days copying the works of the classical masters.

But Manet felt that this kind of painting was totally meaningless, so he didn't like to paint like this in his heart, and at that time he said that when I walked into that studio, it was as if I walked into the grave. So later Manet gave up the orthodox academy, and began his own new style of creation. After he published his first painting, Picnic on the Grass, he received unprecedented attention and criticism. His art form was brand new, something completely different from existing art forms.

At that time, after the publication of this painting, it was severely criticized by the traditional American Academy, which considered Manet as a denigrator of art. But there was another school of thought that expressed appreciation for Manet, and they believed that the future of art was diverse, because they saw in Manet's painting the nobility of art, as well as their own previously unseen flamboyant and colorful colors and vivid and moving strokes, and these forms of expression came to be known as Impressionism by later artists.

Manet painted the images of things he remembered. Impressionist paintings had to be viewed from a distance in order to see the whole picture, and up close only the brushstrokes could be seen. Although Manet was denigrated by the formal academy of art at the time, the world recognized the Impressionists for hundreds of years to come, so it is evident that Manet was very visionary and artistically gifted at the time. Since Manet in the French salon held its own impressionist exhibition, later appeared Monet, Van Gogh, Cézanne and other masters of these post-impressionism.