When he woke up, the whole class disappeared, and Qin Guan was trapped in an empty classroom.
Bloody text appeared on the blackboard: Welcome to the secret room classroom, a death trial every 72 hours.
Qin Guan rushed to the door in horror, only to find that the entire school was suspended in the endless void.
Return to the podium, turn on the class computers, and enter the time traveler chat room——
"Be careful, newbies, the mortality rate in the first instance is over 50%!"
"Has anyone ever drawn the 'Master Key'? Pay a high price!"
"I just passed the third trial, and I feel like I'm getting closer and closer to being inhuman..."
Qin Guan stared at the screen, his fingers trembling, so now comes the question——
As the only survivor in the class, how should Qin Guan survive the first trial?
The story ignites internally,