Cai Jimin is a famous oil painter in our country, he is also one of the first group of art educators. Mr. Cai Jimin, pursues oil painting art for more than 60 years, He explores the mysteries of oil paintings determinedly by learning the history of painting and insights gained in practice and forms his own unique style. Mr. Cai Jimin enjoys painting at the scene, and has summarized his skill of direct sketch as the process of "observation, discovery, experience and performance. He refines his own language during the process, pursuing "the direct image of vitality." Vivid image depends on the painter's sensitivity, intelligence and ability to improvise. It is also relates to the degree of integration of subjective feelings and objective target. The figures in his paintings are not static, but dynamic, which feels totally different from the paintings painted after photographs. In his works, people not only see his subtle insight, but also see his excellent language expression: the exact shape, sure and smooth strokes which are agile and full of change, the subtle tones and rich colors, harmonization and unification between details and overall effects, and his sincere feelings in his strokes.