"Spirit is divided into heaven; bones are divided into earth. It belongs to heaven and is pure and scattered, and belongs to earth and is turbid and gathered. The spirit is separated from the form and each returns to its true nature."
A natural disaster in 2600 AD completely changed the development trajectory of mankind. The rapidly deteriorating living environment and scarce resources have forced humans to build sky towers and underground cities, while also allowing technology to develop rapidly in the apocalypse.
When the spiritual body, which is synonymous with the soul, can be extracted, and when the spiritual body can be permanently parasitic on the machine to achieve immortality, the overwhelmed earth will use up her last resource to pay for greedy humans.
How can humans save themselves? What is the final destination?
Purpose: Although the body dies, the spirit lives on forever