Only few people know that life is beautiful for lacking something. The so-called turning-around is that you not only miss the sun in day time ，but also the stars at night.

只有很少的人懂得，人生是因为缺憾而美丽，所谓的回头，只不过是丢掉了白天的太阳之后，又错过了夜晚的星星。