Once Lin Yu traveled through time, he became a prisoner in a parallel world!
I thought my life would be bleak, but I was accidentally bound to the daily sign-in system, and started a counterattack in this small cage.
By checking in every day, high-end scientific research knowledge is at your fingertips, and precious materials are constantly flowing.
There are dangers everywhere in prison, but he works step by step, relying on the power of signing to resolve dangers and accumulate strength.
On the day he was released from prison, he plunged into the bustling city with nuclear fusion technology that could change the world.
Business giants and technology tycoons have appeared one after another, and there are undercurrents of forces surrounding this disruptive technology.
