The End of the World: I, Unlimited Investment, Return the Star Destroyer Cannon

When he woke up, Su Chen traveled to the doomsday world. This is a world where zombies are everywhere and there are countless mutated creatures. Just when Su Chen thought his life was over, he unexpectedly awakened the unlimited investment system. Invest and get rewards back. Invest in a small pistol for a dead soldier and get a Star Destroyer Cannon back! Invested in a tank for the army and returned a war fortress! I invested in a mechanical skeleton for a disabled girl, and the system returned the Iron Man mark fifty. ………… The apocalyptic creatures have evolved and are gathering to attack human cities. But suddenly I discovered that the world had already changed. Battle fortresses rose into the sky. The Star Destroyer Cannon is aimed at the apocalyptic creature**. Countless mark50 steel mechas are spread across the sky. Su Chen: "This is the worst of times, but also the best of times!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.