Abyssal Diggers

The universe is ushering in a periodic "Great Annihilation", technology has degraded, and physical laws have failed. Lin Ye picked up a "rag" in the garbage dump of the shelter - an abandoned portal that could only connect various doomsday worlds. Low on energy? Go to the radioactive wasteland to grab a high-power battery! Food shortage? Go to the giant mushroom forest to get some high-yield spores! Running out of medicine? Go to the genetic collapse laboratory to grab the last serum! While others were struggling to survive in the apocalypse, Lin Ye was very busy: he had to calculate whether he would lose or make a profit during this time travel, and he had to bargain with alien guys and robots. But he gradually discovered that there seemed to be a pair of invisible hands behind this disaster...