Chapter 163: A Special Physics Exam Paper, Zhou Jinshen's Test Zhang Shu said, "The last period is his class, and he's teaching right now! Sit here and wait a bit. He said he'll come right after class! The principal is also expecting you, we're just waiting on you!" Hearing this, Xie Zhao sat down at Xia Huajin's desk and casually picked up a book to read. Zhang Shu, however, wouldn't let it go. He leaned in, his face glowing, asking questions left and right before finally blurting out, "Then,…