As a freshman, you don't know that you don't know; as a sophomore, you know that you don't know; as a junior, you don't know that you know; as a senior, you know that you know. The college story of the post-80s generation. "Although we were young and ignorant at that time, it was too easy to mistake desire for love. In fact, the person who loves you most will only appear when he understands responsibility. Sometimes we should really be grateful to life. It has given us so many hardships. People always understand the meaning of life after suffering."