The System Connects to the Apocalypse. I Slaughter My Way Through It, Then Rebuild Civilization

The “Gate of the Supernatural” opens, and Qin Mingyu somehow makes contact with another version of himself, one living in an apocalypse! At their point of contact, the two can exchange what they have. They can not only trade what each needs, but even share their powers! The modern-day Qin Mingyu rises to prominence by using wealth that is useless in the apocalypse, becoming a newly minted tycoon. The apocalyptic Qin Mingyu takes off with supplies bought at will in the modern world, becoming a ruler in his own domain. Rebuilding civilization is only a matter of time. But just then, they discover that the “gate” at their point of contact has changed again...