Waste Material, Surviving in the Apocalypse and Cultivating Immortality?

The outside is full of man-eating monsters, and the inside is a hierarchical siege of despair? At the beginning, 'Sir, your qualification certificate for cultivating immortals has not passed the review.' I have to take a detour when I see Reiki! Want to cultivate immortality? Give birth to a good child in your next life! Goal: Cultivation. Difficulty: Epic Hell! Protagonist status: Starts with one life, all equipment depends on picking up!