The one who had sighed was Lin Chao's senior, a graduate student in the Mechanical Engineering department.
She had been busy with her supervisor's project recently and spent every day in the laboratory, but the data she produced had never been ideal.
Lin Chao was a student who shared the same supervisor as her. Although Lin Chao was an undergraduate student, he performed better than her in the project, thus she had never been satisfied with Lin Chao.
Now that she saw Lin Chao bringing two people who were not from his department to the laboratory, she was even more displeased.
"Lin Chao, who allowed you to bring her into the lab? This girl looks underage. Your taste is pretty weird."
Lin Chao was confused by the series of questions.
Students from other departments often came to their laboratory to do related experiments. Usually, no one would say anything. Why did his senior suddenly scold him today?