The World Is Undergoing Drastic Changes, and Only I Know How to Survive

No one thought that one day, the world would undergo huge changes, with tsunamis, volcanoes, earthquakes, animal mutations, and the temperature dropping directly to minus 100 degrees Celsius. Mutated monsters spread everywhere, trampling on human cities everywhere. Human beings were like ants in the roar of nature, being ruthlessly deprived of their lives! When the great changes in the world came, Cheng Ling only lived until the third day before he died. Then he was reborn, one month before the great changes in the world! This time, he knows how to survive the great changes. There is still one month, which is enough time!