It was the first period of the afternoon, Physics.
The physics teacher was a very busy man. He frequently moonlighted at tutoring centers in An City, where he earned a monthly salary far exceeding that of his primary job, so he naturally didn't put much heart into his teaching. Of course, he would never dream of resigning; after all, this was an "iron rice bowl."
He wasn't very tall, had small eyes, and wore glasses.
Chapter 642