The so-called " pain of youth " series usually refers to a series of novels that describe the growth, emotions, dreams, and other topics of adolescent girls. These novels are characteristic of sincere emotions, delicate descriptions, twists and turns, and dramatic. They often involve sensitive topics such as sex, emotions, family, friendship, etc. The representative works of the Youth Pain series included To Our Lost Youth, Charlotte's Worries, and The Girl We Chased Together All Those Years. These novels were widely circulated on the Internet and were loved and sought after by the majority of readers. If you are interested in the Youth Pain series, you can search for relevant information on the Internet or read related novels to better understand the characteristics and content of this series.