Joke Collection Website - Mood Talk - I spent 900 billion to build a sss-class safe house. What novel is it?

I spent 900 billion to build a sss-class safe house. What novel is it?

Strange invasion: I hoarded hundreds of millions of materials in the last days. According to official website, the starting point, it is the novel Strange Invasion: I have hoarded hundreds of millions of materials in the last days, which tells the story of Ye Chen's rebirth on the ninth day before the arrival of the last days. At first, he sold his company, and then hoarded hundreds of millions of materials, in exchange for SSS-class doomsday fortress and built a top-level safe house.