Destined Protector of the Tao, I Slaughter the Tao of Heaven for the Sake of Longevity

(Fantasy: slightly slower pace + system + immortal upgrade + passionate blood + decisive killing + multiple female protagonists) Qin Yi traveled to the fantasy world, awakened the Destiny Guardian System, and was ruthlessly transported by the system to the spiritual spring of Destiny's daughter. With the first guardian, he began the path to immortality; What's wrong with my mortal body? Look, the divine body, holy body, and Destiny Child are all working for me; what's not pleasing to the eye? Obliterate and strip away the origin of luck, pursue the road to immortality with a mortal body, and create a prosperous age for the human race! Heaven's way restarts? Did I agree? I, Qin Yi, refine the five elements, absorb thunder, transform yin and yang, control time and space, shake gods and demons, seal weirdness, chase immortality, and open up the avenue for the human race!