Global Doomsday: My Brood Is Unlimited Upgrades

The Andromeda galaxy collides with the Milky Way, causing a rogue blue giant star to rush towards the solar system. Tidal gravity, solar storms, and meteorite impacts follow one after another. The countdown to destruction begins. Xu Biao traveled to this parallel world and faced the first wave of meteorites. Fortunately, he got the brood and opened his own home, which can be upgraded infinitely. Worker ants → mechanic ants → soldier ants → fighting ants Medical office→clinic→hospital→tertiary A hospital Cultivation room→greenhouse→farm→manor (PS: Catastrophic doomsday background, please collect it!)