If Nan Zhubin remembered correctly, during the recent case-sharing session, there were a few sporadic areas in the audience where low laughter erupted at inappropriate times.
One of those areas was the place where this round-faced male student was sitting.
At this moment, Nan Zhubin was watching the expression on the other person's face.
Generally, students with questions have a gaze that remains fixed on the responder, and their eyes naturally follow the speaker's movements; their eyebrows may show a short-lived rise from the excitement of raising a question, or a brief frown caused by the confusion of a troubling issue; their bodies may lean forward to varying degrees, to lessen the space between them.
But the male student asking the question right now—
[Body slightly leaning back, arms crossed... with a touch of [defense]; but shoulders are relaxed, not very tense.]