One door, two worlds.
On one side is a wasteland devoured by nano-virus, and humanity is on the verge of extinction;
On one side is a prosperous and peaceful modern city, with abundant materials but indifferent people.
Tang Han, a former biotechnician who returned to his hometown to lie down after losing his job, accidentally discovered that the old well in his backyard was actually a passage connecting two worlds.
In the wasteland, a bottle of amoxicillin is worth a gold bar, and a bag of cement can be exchanged for the technological blueprint of the previous dynasty. He used modern fast food and daily necessities to exchange the "grey crystals" unique to the wasteland from the desperate survivors - a strategic resource that can rewrite the modern energy pattern.
A "Symbiotic Nano-Core" sleeping in his body subsequently awakened, giving him the unparalleled ability to decompose and reconstruct everything.
Scrap metal from the wasteland turned into sophisticated medical equipment in his hands;
Modern plastic waste was transformed by him into a filter element that can purify the waste gas.
He uses cheap goods from the supermarket to tilt the balance of fate between the two worlds.
But as he gradually penetrated deeper into the ruins of wasteland civilization, he discovered——
The "grey tide" that destroyed the world was not a natural disaster, but a man-made disaster.
And the origin of all this is inextricably linked to his father who "died accidentally"...
"Don't talk to me about your ideals. My ideal is to leverage the most valuable things at the cheapest cost."
"——By the way, it turned the two worlds upside down."
