Chen Mingde, a mechanical engineer who died suddenly from overwork, opens his eyes to find himself a gladiator slave in ancient Rome.
Others transmigrate with a System or pocket dimension. All he brings is a mind full of gear and bearing blueprints. When the instructor, Marcus, works him to the bone, Chen squats in a scrap heap and hammers together a foot-powered grinding wheel from bits of junk metal.
Chen Mingde wipes the machine oil from his hands and thinks: This is just the beginning. The blueprints in my head are enough to build a whole mechanical army.
From slave to emperor.
