Four Major Disasters in the Last Days

I thought it was just a small rain disaster and flood, but then I thought that this was just the first disaster. After the flood receded in 90 days, and I only had less than four months of recovery, the second snow disaster suddenly came 150 days later. After 150 days, after the ice and snow melted, a large number of ancient poisons from thousands of years ago appeared. The third disaster came suddenly, and the people who survived ate a lot of snow in the ice and snow weather, resulting in Mutated and turned into zombies, this time it took longer. Three years later, three years after the surviving and stronger humans eliminated the zombies, human society is undergoing a comprehensive recovery. How can we think of the fourth disaster coming, and the previously dead people may turn into zombies and appear from the unknown world, one, two, three... Until all the weirdness comes, can mankind around the world finally defeat it?