If Cheng Xiaojiu was a child from another family who was ranked among the top three in grade every year, then Yu Chaosi was the antonym of Cheng Xiaojiu. However, Cheng Xiaojiu failed in the high school entrance examination that year and was admitted to Nancheng No.15 Middle School, so the two people who were originally incompatible met in Nancheng No.15 Middle School.
Intention: None