Su Nanzhi was indeed treated as a serious patient by Jian Xin and observed in a hospital bed all morning, so much so that she not only missed the first few classes but even the last self-study session—the math competition class taught by Teacher Jiang.
When Jiang Beiyu didn't see her in the class, he inquired and found out that good fellow, she had been detained in the infirmary by Jian Xin all morning.
Subsequently, she missed this class as well.
Jiang Beiyu, as usual, left some problems for the students to ponder and then casually asked a student to also bring a copy of the problems to Su Nanzhi.
Jiang Beiyu originally wanted to ask Su Nanzhi's deskmate, that seemingly fluffy little girl, who also had a fluffy-sounding name, Ruan Yingtao.
However, Zhao Qingheng approached the podium first, "Teacher Jiang, I'll bring back the homework for the absent student."