Kim Hae-gyeong, that is, poet Lee Sang (李箱) is a brand of the individual Lee Sang. The influence of the Lee Sang brand that has spread throughout Korean society has continued since his debut in 1930. Interpretations of his poetry have also become more profound over time. The sentence “Do you know the stuffed genius?” from Lee Sang’s 1936 work “Wings” is a phrase that Koreans often quote when writing something. In addition to Lee Sang, there are other literary figures whose works have been quoted and made known to the public. For example, Han Yong-un's "You are gone", Kim So-wol's "When you go away because you find it disgusting to see me", and Seo Jeong-ju's "For twenty-three years, it was the wind that raised me" in his self-portrait. Such sentences are also often used in advertising copy. In 2019, Go Min-jeong, Go Jeong-seon, Kim Ho-young, Moon Jin-hwa, Won Ria, and Jeon Yo-han published a book with the phrase "It was the wind that raised me" as the title. "The small ball shot by a dwarf" written by Jo Se-hee in 1978 is also often parodied. Titles that condense the content of a work are effective in arousing the public's emotions. This shows that these works have a great influence on Korean society. Among them, poet Lee Sang's works are enough to arouse readers' curiosity or express wonder at the writer's spirituality, and as a result, there are still those who are inspired by him and continue to create works. In 1975, the Lee Sang Literary Award was established. Let's find out why the Lee Sang brand is still alive and what is the source of this vitality of the Lee Sang brand.

Lee Sang has advanced Korean literature by more than half a century. Lee Sang's attempts are on the same intellectual and emotional level as those attempted in France, England, Spain, and Germany at the time. In the past, poets thought that poetry was about describing objects in a sensual and beautiful language, but Lee Sang just simplified it. This means abstraction. And what is difficult to express in words is shown in diagrams or pictures in his poem. The poetry of seeing conveys meaning through images. Lee Sang is a very progressive, experimental, and forward-thinking figure. Almost all literary researchers in our country rush to study Lee Sang. Lee Sang is a polyhedron in which new aspects are discovered. Lee Sang researchers are currently conducting many critiques and discussions that transcend texts, but this is the reason why Lee Sang's literature continues to be obscure. This paper raises a discussion about this.