Zhong Lingxiu, an ordinary 211 student, is only 21 years old this year, but she feels that she is already in her 70s and 80s mentally. She no longer has the high fighting spirit when she first entered the school, nor is she as nervous as seniors and seniors are for postgraduate entrance examinations or preparations for competitions. Going to and from get out of class without any purpose every day, playing with mobile phones regardless of the occasion, laughing unbridled on the virtual network... She thought that she would spend the last two years of college in such a muddle-headed way, and then find a job, go on a blind date, and get married with the help of her family. Things that she thought were completely unacceptable before became excusable now. But one day, I had an intersection with an older man, and the two parallel lines gradually came into focus. The calm heart of a pool of stagnant water also began to have ripples. Maybe, I could give it a try?