C2033 Students Mother Fu's Class Is Starting

What made him even more depressed was that even though he was left alone, he didn't dare to make a sound …

The reason was simple. Once he made a sound, what would he do if it affected the other party's experiment?

Truth be told, he really wanted to leave. However, every time he made up his mind to go to the door, his remaining reason would forcefully suppress the impulse in his heart