The article vividly reveals various life experiences for us with an appropriate metaphor. The writing is simple and touching, sincere and sincere, and the content is thought-provoking and enlightening. Let readers think of the world of mortals, such as affection, friendship, love, career, achievement, status ... Let readers see the meaning of life and explore the most mysterious life. People not only ask themselves: I can't help getting on the train, but maybe it's puzzling when I get off. But I can choose to face the passengers sitting next to me, and I can choose to enjoy the scenery outside the car. You can choose to adapt to a car, or you can choose to change cars. You can experience a car that is boring for you to resolutely explore the car that suits you, or you can use the passing of a car to extend your optimism and enthusiasm to influence others. ...