Introduction to the work: On the first day of the first year of high school, the reckless Lin Wei bumped into the "walking textbook" Jiang Yi because he was late. A textbook is always dog-eared, a desktop is always neat and tidy; a student with math difficulties is a master of science. From the embarrassment of knocking over the mineral water, to the tacit understanding of sharing the wrong question book; from the ginkgo leaves on the autumn outing, to the looks at each other under the shadow of the poplar tree - when the lost and confused egg meets the clean and gentle boy, their story, like the poplar leaves in the morning light, quietly begins a new chapter in the green wind.