Lin Chen was "bound".
But it's not the system that's bound.
But - the whole world.
From that day on, every night, he will be forcibly pulled into a dangerous world, and everything he sees and experiences will be broadcast live to billions of people around the world simultaneously!
He bleeds and the world panics.
He becomes stronger, and all mankind benefits simultaneously.
If he dies - the earth will accompany him.
So, the whole world went crazy.
The country established the highest-level command center for him, and scientists were on call 24 hours a day. Hundreds of millions of people stayed up all night just to help him survive.
As the ruins awakened and the ancient "door" reopened, Lin Chen gradually discovered:
He has never traveled through more than one world.