After saying that, Xinchi lay down again, ready to start a new round of sleep. "I can't sleep peacefully this late at night..." Xinchi squinted her eyes and sang Principal Tan's song. Every time she sings Principal Tan's song, Xinchi is filled with emotion, as if she is seeing Principal Yan from her high school days. Principal Yan was transferred from Xinchi when he was a senior in high school (the previous principal was expelled for gambling in the office). In order to improve his credibility in the school, he showed a strong focus on teaching quality as soon as he took office and launched a vigorous anti-corruption campaign. His focus was on men and women in love. He was different from the measures taken by previous principals. He did not explicitly stipulate that falling in love was not allowed, but emphasized that falling in love should be made public. At the end of the semester, he organized the Academic Affairs Office to select two awards: "Best Campus Couple of the Year" and "Moving Teacher-Student Couple of the Quarter". He also celebrated the winners with great fanfare. In praise, he said, instead of letting lost men and women steal kisses and work hard in the dark, it is better to make it clear and have love happily, so that they will not take time to find ways to deal with the obstruction of teachers and the interference of students, so they can learn to fall in love at the same time. Principal Yan's move was warmly welcomed by the majority of students. Especially Xinchi, because he won both awards in one fell swoop during his senior year of high school. On the day he won the award, he burst into tears. He was so grateful for Principal Yan's wisdom and reasonableness that he could only burst into tears.