My universe in a bottle

Psychiatrist Li Qing received a mental patient who claimed to be the "Creation God".
The patient told about his time-travel experience:
"Dr. Li, I discovered that I have a super power. I created a microscopic civilization in this room, and launched a great flood to destroy the world more than once, wiping out their lives. But I am about to die, and I am about to die as Pangu."
Li Qing comforted him: "I believe it, I believe it."
He said: "My death is fate and will usher in an era of civilization for the ultra-small civilization in this ward."
A few days later, Li Qing suddenly received news of the mental patient's death, and found out that everything he said was true.
As an ordinary psychiatrist, I must dispose of the relics of the patients here and destroy the civilized world in the ward. Otherwise, this civilization may kill all human beings on the earth.
...
The creation and farming flow, the mastermind behind the scenes, deduce the evolution of organisms.