The invigilators just need to prevent them from contacting the outside world or plagiarizing each other.
Sophia knew these invigilators. One of them, Shawn, was an acquaintance of hers. When Sophia was in Glinton, he often came to her to ask some difficult questions, and he brought her various snacks or hairpins and so on.
After the test papers were sent out, Sophia looked over the questions and started from the most difficult one.
After finishing the last two difficult questions, she suddenly felt something strange behind her. Looking back, she saw Shawn standing behind her, with a look of worship.
Sophia was very familiar with that look. That was the young man's face every time she helped him with a problem.
She went on with the questions, the rest of which was simpler. She did it quickly, and it was not long before she finished it all. After a rough examination, she got up and handed in the papers.