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.
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The creation and farming flow, the mastermind behind the scenes, deduce the evolution of organisms.