When Du Heng went to work in the morning, his mood had already improved from yesterday's irritability. He walked into the classroom with his head held high, ready to teach.
After more than a month of this continuous practice, Du Heng had gradually come to enjoy this feeling.
Compared with occasionally substituting for Li Jianwei's classes last semester, he felt an increased sense of pressure, but also of responsibility.
Moreover, he considered teaching a glorious and sacred duty, so he approached every class with utmost seriousness.
Usually, when entering the classroom, he would remove all items unrelated to the lesson from his person. He would either place them in his office or hand them to his teaching assistant, Xiao Su.
And today, he had handed his belongings to Xiao Su, allowing him to focus entirely on teaching.
However, Du Heng caught Xiao Su, who was below the podium, trying to signal him out of the corner of his eye several times.
