I'm Still Single, and My Grandson Actually Wrote Me a Letter?

Rebirth in a parallel world, attached to the body of a freshman. Without a golden finger or a system, Li Feng sadly picked up the bottle of wine and started writing a letter to his unborn grandson. Unexpectedly, my grandson actually replied! Also brought future black technology? Space-based Internet, virtual game engine, controllable nuclear fusion and... With the blessing of future technology, Li Feng cheated repeatedly, and the phoenix rose from the ashes, developing a technological empire that made countries around the world grit their teeth and feel helpless. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.