Library

"This experiment is quite simple. I am just reinstalling a system by myself. Do you have any questions?" The young teacher on the podium looked at the students below and frowned. "They all raised their heads. Some were sleeping and playing with their mobile phones while others were playing with their mobile phones. What a look!" Several people raised their heads subconsciously, and then lowered their heads.

In the 21st century, various bizarre incidents of doomsday planes disappearing are commonplace. It seems that all people and things are so lacking in tranquility. Of course, this is also the case in H City.