Infinite Sand Author Light Novels

Song Shi came to an immortal world where demons and monsters were rampant. He thought he was going to take a trepidatious road to immortality, but ended up awakening to a death-defying system, gaining strength from death and getting stronger every time he died... The whole style took a sudden change. Other people cultivated to seek immortality, but he was already immortal, and could only seek immortality by having himself killed in various ways, ...