Doomsday Survival: Build an SSS-Level Shelter at the Beginning

Tens of billions of people around the world have descended into the apocalyptic world at the same time and started a survival game. Facing a world where zombies are rampant and mutant species abound, Yang Feng obtained an SSS-level refuge at the beginning. He can redeem anything from within the shelter. "Ding, congratulations on your successful redemption and obtaining the Seraphim." "Ding, congratulations on your successful redemption and gaining space powers." "Ding, congratulations on your successful redemption and obtaining the god-level dragon-slaying knife." While others are still desperately killing monsters, upgrading and grabbing treasures. Yang Feng only needs to buy and sell goods to increase his combat power. This book is also called The Years When I Was a Boss in the Doomsday, You promised to survive the doomsday, but you turned it into a leisure vacation? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.