Gatsby had a memorable relationship with Daisy, but Gatsby had to leave the country because of the war. In the distant foreign countries, on the battlefield where artillery fires, the comrades-in-arms are dead, and death is echoing at any time. He can't show weakness, he can't surrender to loneliness, he can't surrender to fate, so he needs a dream. Daisy became his dream, a light that supported him through the mud (green light in the book).

Daisy is just an ordinary beautiful girl, but for Gatsby, this is not enough, not enough. If she is just the level of a girl next door, how can she become a life-saving straw when a man struggles with fate? Therefore, in Gatsby's heart, he needs Daisy to become a perfect goddess, a perfect dream to support him to live. Although Daisy itself is not perfect, he constantly adds to his heart, adds leaves and adds vinegar. ... Slowly, in the battle between Gatsby and destiny and loneliness, Daisy became perfect and became the pursuit of life.