It's half an hour before the end of the exam.

At this time, Xia Shihan's face was red and her body was fragile. She was a girl pursuing perfection. Everything should be perfect.

For the math exam, she was most afraid of the last big question, so she asked Tang Yu to teach her big question many times before. The wind and water ahead, down the road, there is no hindrance, and to the last question, but really card master!

Xia Shihan's heart is extremely tense and anxious. This question is only 30 points, if you can't do it, it will be 30 points less than the top students of...