I Seek Immortality by Killing

Others rely on talent to cultivate immortality, while I, Fang Yuan, rely on longevity to cultivate immortality. Traveling through the realm of cultivating immortals, I became a mortal unable to cultivate. Until I discovered that killing demons can rob them of their longevity. What's even better is that these demons can burn directly during their lifespan and perform thousands of techniques to perfection. When the genius of the Immortal Sect was still practicing hard to get started, I had killed the hundred-year-old monster with one sword and cultivated the supreme secret technique to its peak. You are laughing at me for committing murder to prove my truth, and will I go crazy sooner or later? Have you ever thought that when your lifespan is exhausted and turned into withered bones, I... Will continue to kill and live forever!