Presented a carefree, relaxed, nostalgic and funny campus life scene, evoking the collective memories of the post-80 s generation, from which almost everyone can find their own shadow. The later period presents a depressed, indifferent and helpless social life. The sharp contrast between the two makes the audience deeply feel the invisible and insurmountable gap between dream and reality. From boys to old boys, from dreams to reality, "old boys" is like a sharp knife, completely tearing the hearts of the post-80s generation. Life tells most people that they must give up their childhood dreams and choose a road they don't want to take. The classmates around me are similar, doing everything, and they have long lost their blood and dried up their ideals in these years. At that time, the people who accompanied us, as well as the school flower and school grass, had already drifted away. Only graduation photo's young face and eyes are full of infinite longing for the future. The whole song answered, "What is reality? What is an ideal? "