This also indirectly shows how fast his progress was, how much ahead he was.
Awkwardly, after the class with Professor Zhu today, Li Zhiyuan didn't rush to leave because he hadn't finished the book in his hands. When the other students had left, Professor Zhu came over to the back row and sat beside him.
Li Zhiyuan closed the book, but Professor Zhu borrowed it. After flipping through it, he wasn't angry about Li reading such a book in his class; instead, he smiled and said he had such books at home too, but they were about morals and health, not as specialized as this one.
He also mentioned that his wife was into Chinese language studies and invited Li Zhiyuan to visit their home when there's a chance.
Li Zhiyuan accepted the open-ended invitation.
He slung his backpack over his shoulder and left the classroom.
Spending too long in the dormitory can indeed get tiresome. In recent days, he truly felt like he was here to study.