Ghosts were things that souls evolved into.
In human society, a few authors and directors had personally experienced supernatural events and survived under special circumstances, allowing them to create outstanding works that touched upon humanity's most primal fears (a certain fat person implied).
Of course, what most ordinary people saw at most were some conventional humanoid ghosts and monsters. That was why the image of a long-haired female ghost appeared so often in various works.
However, the vast world held all kinds of wonders.
Some special people did not become ghosts because of hatred, resentment, unwillingness, or other negative emotions.
Instead, their souls changed because of some simple yet stubborn idea. The obsessions of such obsessives were exceptionally intense and had clear goals, to the point that the forms they took after death were connected to those obsessions.
The mechanical old man inside Feng Rui belonged to this special kind of ghost.
In life, he had served at the Chana Empire's Military Research Headquarters and had been a bona fide scientific research maniac.
He had loved scientific research, military technology, and possessed a blazing patriotic heart.
Soaking in the laboratory had been his greatest pleasure. Whenever he encountered an important experiment or a theoretical deduction that required his undivided attention, he could stay in the laboratory for several days without eating, drinking, or sleeping.
His love for military research had overwhelmed every other desire within him!
Even in his seventies, he had never dated. The state had arranged hundreds of blind dates for him, but none had helped.
He had received countless medals throughout his life. In the end, at the age of eighty-three, he died suddenly in the laboratory after going five consecutive days and nights without eating, drinking, or sleeping while developing a new technology called "Metal Creation."