Professor Li stood on the podium, smiled at everyone, and nodded: "Hello, classmates."
All the students said in unison, "Hello, teacher."
A student stood up in the front row, saluted the teacher, and the teacher returned the salute.
"Report teacher, 2009 students from the Department of Criminal Intelligence, the Department of Public Security Information, and the Department of Public Security Management, 213 people should be present, 213 people actually arrived, the report is completed, please instruct."
"Let's go to class." Professor Li smiled gracefully, and the students who reported to them sat down immediately.
Professor Li is in his fifties this year. He is kind and quiet, and the temperament brought by his knowledge is extraordinarily elegant.
If there is a temperament hidden in
