During the Doomsday Disaster, the system gave my brother and I three skills to choose from, repeating actions and markings. My brother snatched the last two skills before me, while I silently picked up the first function. When the water and electricity were cut off at the end of the world, I directly activated the fixation skill to stick all the food in vacuum packaging to keep it fresh. When the zombies came, I activated my skills and sealed the doors and windows 100%, creating a perfect safe house and blocking the zombie invasion. The younger brother violated the rules and chose two skills, but he did not expect that the multi-selected skills had a time limit. As a result, he was overtaken by zombies on the way to escape and bit off one of his legs. He held a grudge and blamed me for everything.