Use your smile to change the world. Don't let the world change your smile.Even though you only have the shadow of yourself with you，don't forget to smile to yourself. Smile,dear .用你的笑容去改变这个世界，别让这个世界改变了你的笑容.就算只有自己的影子陪伴，也不要忘记对自己微笑.
