Doomsday City: My System Is a God-Level Base

Travel through the doomsday and activate the god-level base system. Lin Ye looked at the abandoned factory in front of him and fell into deep thought. Start with a piece of land, and upgrade it all by picking it up? Bite! The base has been upgraded and the "exploding potato" planting technology has been unlocked! [Ding! The Armed Forces Department has been upgraded and the "Electromagnetic Pulse Rifle" assembly line has been unlocked! [Ding! The scientific research center has been upgraded, and the mad scientist requests an autopsy experiment on the Living Corpse King! While other survivors were still struggling to survive, Lin Ye was already worrying about whether the next enemy was strong enough. Don't ask, if you ask you will be crushed by technology. "What? The Blood Wolf Gang wants to steal my territory?" "Just in time, the newly arrived rail gun hasn't tested its power yet!"