Three Thousand Years Young Again: While You Practice Martial Arts, I Cultivate Immortality

[Youth rejuvenation + ruthless + not a goody-two-shoes + invincible protagonist + thrilling power fantasy + wild imagination + immortality + master descends the mountain] With a mysterious cultivation technique, Ye Tian has lived for three thousand years, yet can never break through the Qi Refining stage. Every time he dies, he returns to the age of eighteen, as though he were immortal. He went down the mountain to gain experience, once serving as a general and galloping across battlefields, and once entering the court as a chancellor, holding power. He experienced the ways of the world, and also slept on the streets disguised as a refugee, searching far and wide for opportunities, but it all came to nothing. In this life, he plans to live differently. But after descending the mountain, he discovers that people nowadays seem to know only martial arts, while he, a cultivator, seems to be invincible.