Lin Jin is twenty-eight years old. In reality, he is what everyone calls a "fool".
He reacts slowly, talks little, cannot understand complex cues, and cannot learn other people's tactful ways of living.
Until one night, he woke up from his dream and found that he had turned into a kindergarten child.
The classroom is filled with "children" who also retain adult memories.
The first rule is written on the blackboard:
Please be a good boy.
You can't cry, you can't run around, you can't make the teacher angry.
But soon, everyone discovered that the standard for a so-called "good boy" was constantly changing.
Smart people try to reason about the rules, strong people try to control the situation, and bold people try to find an exit.
Only Lin Jin sat slowly in the corner, head lowered, not speaking, not answering, not showing off.
He's not the smartest one.
But after every round, he was always the one who survived.
And when each copy ended, everyone finally realized one thing:
The person they thought was a fool is becoming smarter and smarter little by little.
