This book revolves around Lin Zhixia and her friends, embarking on a humorous journey of youth growth. From the intense review in the senior year of high school to the confused exploration in college, to the difficulties and hopes of entering society for the first time, every stage is full of real details and ups and downs. The five protagonists support each other through life difficulties such as study pressure, friendship crisis, family twists and turns, sweet first love, ideal obstacles and self-doubt. The story confronts the helplessness and regret of youth, and also presents the self-growth and life answers that everyone obtains through compromise, giving up and persistence. In the end, before they start a new chapter in their lives, they understand that youth is not just something they have "had" but it is also "still brilliant after passing through it."