"It's time to go." Xu Yiyang gently reminded me.

Jiang Xiaoyu looked up at Xu Yiyang with confused eyes and said, "It's only a moment before I go back?"

Xu Yiyang motioned her to look at the middle of the wall. It was nine o'clock.

"It's so late, but I don't feel like I've reviewed it yet. I only have one set of papers for each course." Jiang Xiaoyu has some difficulties. Is her learning efficiency too low?

The students sitting next to her looked at her with some sweat. They had finished nine courses in just a few hours, but they were still "just"? How could it be for...