The End of the World: I Explode My Troops and Build a Base

The blood moon came that day. At first, people thought it was just a normal astronomical phenomenon. However, when the blood moon came, a blood-red thick fog swept across the world. Countless people were bathed in this sudden blood-red thick fog. Some people began to mutate into zombies and bite those who had not turned into zombies. Suddenly, the number of human survivors was greatly reduced. What should humans do under this crisis...