Apocalypse Exchange: I obtain a trading system and can acquire all supplies through low-cost trades!

What the story is about

After dying in an extreme-cold apocalypse, logistics manager Jiang Huai returns to a week before the disaster and uses his knowledge of supply chains to prepare for survival. He awakens the Doomsday Exchange System, which lets him trade supplies across distances, and builds a survivor base while competing with a former ally and helping other groups endure the freeze.