"Report, teacher, I'm late," Gu Yu stood at the classroom's front door, his expression calm as he addressed Yang Teacher on the lectern.
Yang Teacher turned around, glanced at him, was taken aback for a moment, then smiled and said, "Gu Yu, back from the infirmary?"
"Yes," Gu Yu nodded.
"What's wrong, not feeling well?" asked Yang Teacher with a concerned expression.
"No," Gu Yu shook his head, looking at Yang Teacher frankly, "Just now after class, I saw a classmate with a cut on their hand. It was reddish around the wound; it seems it was not properly treated and might be infected, so I went to the infirmary to get some hydrogen peroxide and some band-aids from the health teacher."
Listening to his answer, Yang Teacher paused slightly, then nodded and said, "It's good to care about your classmates, very good, come on in then."
"Thank you, Yang Teacher," Gu Yu smiled, walking slowly into the classroom.
