Wuxia: Killing Grants Cultivation, and I’m Terrifyingly Strong

[Decisive killing + rapid leveling + no heroine + a tiny bit of cowardly survival instinct.] Zhao Qian transmigrates into a high-martial world, taking over the body of a foot soldier who died on the battlefield. Here, martial arts flourish, the dynasty is powerful, sects abound, and wars never cease. The strong treat the weak like ants, while the demonic path sees them as food. Fortunately, Zhao Qian activates a Slaughter System. Killing people earns him Slaughter Points, which he can exchange for cultivation, martial arts techniques, pills, and other items. From then on, Zhao Qian roams far and wide, diligently following a path of slaughter. Many years later, he looks upon the continent he has left strewn with corpses...