My Life-And-Death Relationship with the Strongest Guardian God in History

"Five Years of Cultivating Immortality in the Cave, and Now I Am Invincible When I Come Down from the Mountain"

I want to read a book like "I practiced immortality in a cave for five years and became invincible when I came down the mountain". An excellent novel among urban cultivation novels, a cultivation novel that I still want to read after reading it!