The counselor of Condensed Matter Physics Class One, Tang An, was indeed very young, especially since he had a babyface. This made him look as though he had just graduated with a master's degree even though it had been two years since he completed his doctorate.
Tang An arrived at classroom 305 and took a seat in the last row at half-past two. At first, the students who entered didn't notice and thought he was a new student like them, until later when two boys came over to greet him.
That's when everyone realized this is what their teacher, Teacher Tang, looked like.
With a babyface, he looked both young and amiable, without a hint of threat.
The boys didn't feel restrained and chatted and laughed in small groups, based on their dorm assignment as usual.
This was fine with Tang An, and it even made it easier for him to observe.
