Jiang Huai looked at the photo sent by his schoolmate. The two people were walking side by side on the tree-lined avenue. They stood out in the crowd because of their tall figures. The shadows of the trees were whirling and the figures dispersed slowly. The memory was frozen into photos and turned quickly in his mind. It seemed that the laughter of the classmates around him echoed in his ears. It was the senior year of high school and the third year of their passionate love.