Polka dots and net paintings are equally important themes and central motifs in Kusama's work.After immigrating to the United States in 1957, Kusama worked in sculpture, action art, video art, and space art. In these installations, she applied polka dots to express what happened. In the 1960s, with the rise of the Floral Movement and the anti-Vietnam War movement, Kusama was known as the queen of avant-garde art, drawing nude men and women in polka dots into focus. "I am a dot, you are a dot, all life, even the earth, is a dot floating in space." Yayoi Kusama said.Since childhood, Kusama has had hallucinations in which her surroundings are covered in polka dots due to neuro-compulsive disorder. "Picasso, Matisse, whatever. I'll fight with just these polka dots." As she said, Kusama's dots and nets are symbols of her "fighting", protecting herself from auditory and auditory hallucinations.The “grapes” are depicted repeatedly, as are the “pumpkins”. This work "Grapes" has nets on the canvas in the background, bunches and stems of grapes and leaves with polka dots. Made in 1990, this work does not have the negative image of polka dots that once plagued Yayoi Kusama used to suffer from when she was a girl. The bright pink gives a positive impression, and the dots and meshes also seem to be symbols of glory.Kusama faced various difficulties, including racial and sexism in the art world and her own illness. However, she overcame these obstacles and created new records of having the most visitors in numerous touring solo exhibitions in Japan, retrospectives in Paris, London and New York, and major galleries in Latin American and Asian countries. Even during the Covid-19 crisis, her exhibition attracted the numerous visitors in 2021, solo exhibitions at the New York Botanical Garden, Berlin's Gropius Bau, and Tel Aviv's museum, causing a similar phenomenon.