The Tuileries Gardens and the Pavillon de Flore, Hoar-Frost, painted by impressionist painter Camille Pissarro in 1900, clearly demonstrates Pissarro's attitude to artistic practices in his later life. In this picture, in addition to achieving the impressionist purpose of representing the fresh colors of nature, Pissarro pays attention to creating a solid composition, which proves his tendency toward the classical-landscape tradition. Taking this point into account, we wish to examine the artistic theory adopted in this painting. This paper begins by comparing Pissarro's Tuileries Gardens series, including the painting in question, with some series by Claude Monet: a pioneer of series paintings. While Monet exclusively pursued direct impres...