An eternal memory of a dull youth, a flower of youth that never fades. When "I" experienced youth, hesitation, hesitation and pain, what was left in "I"'s heart? The fireworks of youth have gradually extinguished, but the beautiful life in those memories has become increasingly bright and dazzling. "I" in the story, Ye Zi, Su Wan, Jun Sheng, Fatty, Jun Hao, everyone in the story, everyone who was once young, their pain and hesitation, bravery and cowardice, forge ahead and retreat, all once resided in our hearts. They are both illusory and real. They are beautiful and sad. When youth becomes dust in time, I hope everyone can retain the courage to move forward.