What does it refer to?

Mysterious occurrences loom; the entire world dramatically changes.
The fate of individuals and nations becomes bound to AnalogHorror (rule kaidan), and once the chosen of destiny fail, it means countless people in their corresponding nation will be slaughtered by the strange phenomena.
The entire world falls into unrest, panic, and despair.
Until an absolutely unexpected individual joins the AnalogHorror game.
Xiao Yiwang glanced at the weird world before him and then at the examination admission ticket in his hand.
"Have middle school entrance exams always been this complicated? Well, it does prove my intelligence!"
"I am retarded, but selected to join the analoghorror game?!"

Livestreaming: I am retarded, but selected to join the analoghorror game?!

Dragon Country People: "Brother Xiao Yi looks so much like how I used to be, just attending class waiting for it to end! His main role was to accompany classmates. Whatever the teacher said, I turned a deaf ear to it, emphasizing participation! But this isn't just any class, this is a life or death situation!"


Dragon Country People: "Is Brother Xiao Yi unable to understand his current situation, or has he not been listening to what others were saying from the start?"


Dragon Country People: "Brother Xiao Yi! Move! Why aren't you moving? Why won't you move!?"


At that moment, Xiao Yi finally made a move and looked up.


Just when everyone thought Xiao Yi was finally about to take some action, he instead looked towards the window.


Outside the window, a butterfly happened to flit by.


After the butterfly flew away, Xiao Yi continued to play with his fingernails.


The live stream erupted once again in anguished cries.


Chapter 51 I still know nothing