I Am Busy Stocking up During the Apocalyptic Natural Disasters, While Others Are Hoarding Food and I Am Collecting Rent.

[Natural disaster + stocking up + infrastructure + business upgrade flow] [Nuclear pollution + nuclear radiation + heavy rains and floods + extreme heat and drought + animal and plant mutations + earthquakes and tsunamis + extreme day and night] Shen Ruoran dreamed of owning a house of his own, so he bought a house early. In order to pay off the mortgage, he died suddenly while working overtime at the company. Since then, the world of fast travel has gained an anti-involution worker who guarantees sleep and refuses to work overtime. After completing a hundred doomsday fast-travel missions, Shen Ruoran successfully retired, and a better life was waving to her. However, the dream was shattered. Shen Ruoran accidentally entered the end of the world caused by a natural disaster caused by nuclear sewage. The cheating system forcibly locked her as a pension reward, which of course came with unlimited space and a building. Shen Ruoran: "Thank you for the invitation, but it's not necessary." A month later, floods invaded Planet L, animals and plants mutated and became extinct, and humanity was in danger. There is only one place where the years are quiet. The towering buildings are filled with people from all walks of life. They have meat for every meal and sleep soundly at night. Even the way to earn rent is very strange, and the landlord does not allow them to earn excessive rent. *Small theater The lights on the 21st floor were brightly lit, and the professors conducted anti-nuclear tests over and over again. At 20 o'clock, the power on the 21st floor was cut off on time. The culprit is Shen Ruoran: "I've told you many times that the rules of the building are that overtime is not allowed. For every hour of overtime, the rent will be doubled." Professor: "..." At the global press conference a few years later, a reporter asked online: "Professor Kang, could you please tell us about your journey in developing anti-nuclear clothing?" Professor Kang smiled: "My daily thought at that time was that I must research something before eight o'clock in the evening today."