I, a Demonic Nascent Soul Patriarch, Begin by Snatching a Cheat

Jiuyou transmigrated into the cultivation world eight hundred years ago. Blessed with dual Ice and Fire Spiritual Roots, he struggled his way up from obscurity, eventually becoming a Nascent Soul Patriarch, founding Soulshade Island, and establishing a fearsome reputation.Yet no one knows that he has been trapped at the Initial Nascent Soul Stage for centuries. His lifespan is running out, and he can no longer make any progress. That is, until he discovers that a menial disciple on his island possesses a small green bottle capable of accelerating the growth of spiritual herbs and rendering them immune to the passage of time. There is no hesitation. No mercy. Kill. Soul-search. Seize the treasure. “After transmigrating to the cultivation world for eight hundred years, I finally realized that cheat abilities have to be stolen with your own hands.” From then on, while cultivators across the world risk life and limb competing for ten-thousand-year spiritual herbs, Jiuyou merely plucks a few hundred-year spirit plants, enters seclusion, and ripens them with the bottle, allowing his foundation to advance by leaps and bounds each day. Witness how this lifespan-depleted Nascent Soul Patriarch embarks upon a path of invincibility that leaves the entire cultivation world utterly dumbfounded. — Description from novelcodex.org