The Delusion of Wasteland

In the future world, rich people have endless lifespans, and light travel to the places they own requires decades of lifespan as a ticket. The poor are crowded into abandoned buildings that look like cockroach nests. They work hard every day and only have enough life to live on that day. They don't even dare to get sick. The poor are even proud to sell themselves to companies for the rest of their lives because they don't have to live a day-to-day life. The world has tended to be balanced. At this moment, the birth of a new technology has caused turmoil...