Bai Yuhang is an outstanding student from S Middle School who is about to be promoted to the second year of high school. The so-called excellence means that he is well-fed, clothed and warm. Even in exams, he can bring his poor grades in a certain subject to the passing line by burning incense and chanting sutras.
This can be said to be the highest state of excellence.
It wasn't until the first criticism was announced at the opening ceremony that Bai Yuhang, who had a fight and repeated a grade, knew that his good luck had run out.
Then he was assigned to a class he didn't want to go to, and became his deskmate with a person he didn't want to know.
This can be said to be the highest state of misery.