Global natural disasters: I still have ten billion in my bank card

In the last days, natural disasters such as heavy rain, extreme cold, intense heat, floods, and insect plagues have been staged one after another, causing the number of human beings on Earth to decline sharply, mutant monsters to run rampant, and lairs everywhere are built with cities that were once prosperous places for human beings, and high-rise buildings are like cliffs, covered with human bones. Yun Yang survived in this world of cannibalism and monsters eating people, running around major bases just to retrieve his son, and finally suffocated and died tragically at the hands of monsters. When she woke up, she was reborn seven days before the end of the world, her son was still an infant, she accidentally obtained space and her ex-husband's tens of billions of inheritance, and began to stock up wildly. The goal is to spend tens of billions to fill the space. Lobster, chips, ravioli, Orleans chicken drumsticks, grouper... Flying in the sky and the upper reaches of the earth, there is everything in the Yun yang space. When others were still struggling to survive, Yun Yang had already taken the cub to open the food broadcast mode. In this life, she just wants to take her cub to live well in the last days!
PS: In the early stage, the female protagonist took the cub to survive, but when there is no CP to watch, the male protagonist appears in the later stage, and the male protagonist's identity has a surprise!