Even to say, almost nothing at all!
The students beneath the podium were all listening with a sense of dizziness, but they could only continue to listen, some who hoped to learn more, were trying hard to listen seriously. Many people simply looked at each other, their eyes all conveying the same meaning, "Teacher Gao, what the hell are you talking about?"
"Is this what we're supposed to be learning?"
"It's not in the textbook!"
"This should be knowledge at the master's or even doctoral level, right?"
"..."
Zhao Yi could fully understand, but he used only a small part of his brainpower, listening to what Gao Yihua was saying, and mostly focusing on thinking.
Parity non-conservation!
This is a very interesting concept, one can say that it is currently one of the foundational understandings of the particle world in the field of physics.
So then, the problem arises--
"Why does the non-conservation of parity occur?"
"Math, is perfect; symmetry, is perfect..."