Huddle in the doomsday and become an immortal alone

Description

This is a fragmented world. Human civilization is lingering on the planet after the Blade Beast disaster. The flames of civilization in the underground fortress are disappearing and appearing. The human elite in space is brewing the ultimate plan to counterattack the Blade Beast. The future of mankind is unclear. Some stars are dim...
"So."
A certain Mahayana master who practiced hard for 125 years failed to escape the tribulation and came to this 'weird' world with a remnant of his soul. He looked up to the sky and sighed:
"This is none of my business."
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[PS: Sci-fi apocalypse + immortal protagonist, this is not a brainless novel. Look for old books and click on the author's name. I won't introduce them one by one, but the quality is guaranteed. A new reader group will be created when I have time. Updates will be stable during the double-opening period, and updates will be added as appropriate after the release. 】