"Big Tree High School" is a campus coming-of-age novel that combines elements of realism and light fantasy. The story tells the story of Ke Chun, a senior high school physics class representative, and his teacher Zhao Zhenguo, who accidentally fell into a static "second dimension" under the pressure of reality - a campus that was empty but running as usual. Here, time is frozen, rules are looming, and only "trust" can keep the world from collapsing. The two were forced to bind, and, guided by the clues of student Zhao Youcai's poetry, they gradually faced their respective loneliness, obsessions and scars. The work explores the nature of education, the value of existence, and the mutual illumination between tiny individuals with calm brushstrokes. There is no systematic explanation, no golden fingers, only the true flow of emotions and slow but firm redemption. The whole story has a soothing rhythm and dense details, showing light in the ordinary.