Life is like a moving train, and the passing scenery is a microcosm of the scenes in my memory; I have met many people, and I am ignorant of the young feelings, and I can't distinguish between like and love. Only when you grow up do you understand that if you lose it, you will regret it and it will be too late to cherish it. Without a proper apology or a proper hug, each other left in a hurry: "We owe each other the unspoken I love you."