Miniature Era: My Shelter Unlimited Upgrades

Overnight, all seven billion humans in the world shrank ten thousand times, becoming the size of ants! The once prosperous city has been reduced to a steel jungle full of dangers. A cockroach is a tank, a mouse is Godzilla, and human civilization has returned to zero in an instant! College student Lin Feng woke up in despair, but activated the [God-level Sign-in System]. While others were still risking their lives for a drop of water, Lin Feng signed in on an abandoned mobile phone and obtained [Nano Core Technology]! When the survivors gathered together to hunt ants, Lin Feng was already riding a modified mechanical dragonfly, holding the injured King of Soldiers in his arms, overlooking this city that once belonged to humans! "Don't be afraid, baby, we will eat roasted locust legs tonight."