Not Mingjue

Huaisang is 14 and Mingjue is 20.
One day, the teachers held a prevention council with each class, i.e. the students and their parents.
Huaisan was never an excellent student, but he was never a poor student either.
And on the day of the preventive council, all his classmates came with their parents, grandparents, in short, with guardians, and Huaisang, who only had Mingjue in his family, logically brought him.
Everyone sat in the assembly hall and listened to some police officer who told them what they could and couldn't do and what the fine was for it. When this was over, the teachers would speak separately with the student and his guardian.