The End of the World: I Have a Steel Fortress

Su Chen accidentally activated the system. Know the end of the world in advance. With the help of the system, Su Chen built an invincible shelter. While others were still worrying about a little food, he was sitting in the shelter eating hot pot. While others were trembling in the face of zombies, his men were armed with heavy weapons. While others were facing energy crises and water shortages, he was playing in the swimming pool with his sister. This end of the world seems a bit unfair...