No One Believes That the End Is Coming, I Am the Only One Who Builds a Shelter

This year, the world was suddenly in trouble. Many people thought it was a year of natural disaster. Only Zhou Feng, who had obtained the system in advance, knew that this was a sign of the end. He cashed out all his assets, built himself a perfect shelter, and warned everyone to prevent the end of the world in advance, but unfortunately no one believed him. Everyone laughed at him, calling him a whimsical lunatic. However, when the end came, everyone regretted it...