The boy Qiao You liked looked clear and clear, like a silent green poplar tree beside the playground track. She spent four years in exchange for an apology from the boy. This may be youth, being able to have the luxury of writing a love letter with a clear mood to someone who will not belong to you in the future. The simple and beautiful warmth we experience will eventually turn into memories like honey. As the lifeline grows longer, on a warm afternoon or on a winter morning with frost and fog on the glass windows, they flow through the body and become sweeter and thicker at a certain moment.