Doomsday: I Can Upgrade Everything

When Lin Chen woke up, he found that he had traveled to a doomsday world. He thought he would struggle in this apocalyptic world, but he didn't expect that he would also obtain the system! The most important thing is that his system has a one-click upgrade function. As long as enough raw materials and crystals are provided, the upgrade can be completed! The kitchen knife plus steel is upgraded to a fine steel machete and a bloody long knife. Steel and cement upgraded to defensive walls The cement-enhanced cannon is upgraded to a primary turret, laser turret, and electromagnetic turret. An ordinary car with a fully automatic defense system is upgraded into a doomsday chariot The fully automatic defense system, full-performance mechanical device, and biological intelligent control system are upgraded to a doomsday mecha. While others were still struggling to resist the zombie siege, Lin Chen had already established his own mecha army! Take the initiative and hunt zombies! .. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.