Because of a USB flash drive left over from the pre-civilized era, Gu Ying's family was destroyed in one day.
The good news is that he was saved.
The bad news is that the person who saved him lives in a wasteland where there is not even a blade of grass!
The worse news is that the person who saved him opened a black shop in the wasteland!
The worst news is that he has to work in the store to repay the life-saving money!
How to get water from a dry riverbed? There is a water detector blueprint in the USB flash drive!
How to plant on barren soil without any nutrients? There is a blueprint for high-efficiency fertilizer manufacturing in the USB flash drive!
Wind turbines, CNC machine tools...
Not afraid
The USB flash drive stores the manufacturing blueprints for all technologies in human history!
Only if you don't think you can't find it without it!
But why do you have to slowly unlock it by rubbing stones with your hands?
Purpose: Human beings support each other when facing difficulties