Of course, some people's expressions were not visible to Nan Zhubin at the moment.
To avoid affecting the students' engagement, Nan Zhubin sat in the seat furthest from the projector, directly facing it.
In other words, with everyone facing the projector, he could only see parts of the profiles of three or four people, and the rest he could only see the back of their heads.
But...
Folded arms, hunched necks, frequently changing sitting positions, and the occasional "tsk" sound.
The intense emotional experience was already enough to reflect on all the students' bodies.
And the chairs that were moved from time to time.
These [emotions] could easily be heard without being seen.
However, for Nan Zhubin, this was still not enough.
...
The video continued to play.
Nan Zhubin explained in a calm tone: "Next, we come to the second day of the experiment."
