" Left Ear " was a novel about the pain of youth, love, and friendship. It was mainly about the friendship story between two boys in high school. They had experienced many growing pains and pains in puberty, as well as experiencing each other's love and betrayal. This book described the unique emotional experiences of puberty, including curiosity about the opposite sex, longing for love, cherishing friendship, etc. It also explored life topics such as growth, betrayal, friendship, and family.