I Can Grow Stronger by Mortgaging My Lifespan. I’m Immortal and Invincible!

[Grow stronger by killing enemies + no suppressing one’s cultivation level + no saintly protagonist + fast-paced + harem, no female lead] The Zhao court holds sway over the land. Above, the Eagle Guard monitors officials; below, the Martial Suppression Bureau controls the martial world. In the martial world, the Buddhist Three Saints Temple and the Daoist Four Great Sects lead the Nine Schools and Eight Gangs. Li Xunhuan transmigrates to Zhao. The moment he opens his eyes, he finds himself targeted for assassination. Fortunately, he awakens the Lifespan Pawn System, which lets him exchange or seize other people’s lifespans for divine techniques and treasures. From then on, a ruthless lifespan merchant begins stirring up trouble across the martial world. Some so-called holy maiden of an ancient sect or royal scion dares to make an enemy of me? They’ll all become my lifespan batteries! … Years later, Li Xunhuan looks at the martial world, now in decline, and shakes his head. “How about we wait until the chives grow a little more?”