Big Tree High is a coming-of-age campus novel that blends realism with light fantasy. It tells the story of Ke Chun, a senior-year physics class representative, and teacher Zhao Zhengguo, who, under the crushing weight of reality, accidentally fall into a static “second plane”: a school with no people, yet running as usual. Here, time stands still and the rules remain obscure. Only “trust” can keep the world from collapsing. Forced to become bound to each other, the two gradually confront their loneliness, obsessions, and wounds, guided by poetic clues left by student Zhao Youcai. With a quiet touch, the novel explores the essence of education, the value of existence, and how even the smallest individuals can bring light to one another. There is no System exposition, no golden finger, only genuine emotions and a slow, steady journey toward redemption. The story unfolds at an unhurried pace, rich in detail, finding light in the ordinary.