C169 School not started yet

Yue Zhonghai knew right away. His appearance could only be considered a freshman. Of course, that was also true for people of the same age. "I saw an old man in his sixties sitting beside me." "You are?" Yue Zhonghai closed the book.

"This is an old man who teaches physics here." "Haha ?" The old man laughed. Seeing that you are seriously reading this book, it seems like you can understand it