Zombie No. 9999: Safety Today

As a little zombie who survived the apocalypse, Xu An became a rat on the street and everyone yelled at him to beat him up. By chance, he found a way to protect himself, which was the crystal core. Relying on the advantage of being a zombie, he kept collecting money to buy minerals and hoard crystal cores. There are 1000000000 purple crystal cores, 1000000000 blue crystal cores, 1000000000 cyan crystal cores, green crystal cores…………, Keep stocking up until you get tired~ What? Can zombies be refined into crystal nuclei? He started raising zombies again. Zombie puppies were too noisy, so 5,000 were enough. Zombie fish were easy to raise, so he started with 10,000. Zombie beauties... Are a bit "clingy", one is enough. The end of the world is coming again, and this time it's Xu An's turn. What? Doomsday safe house? Use it to make a kennel for my dog. Doomsday train? Isn't this the buffet box for my zombie army? Thank you!