Staying in the Demon Gate, Slaying Demons and Ascending to Heaven

Fang Lin traveled through the world of cultivating immortals, but was given to the Demon Sect as a low-level furnace, relying on a single skill to survive. Thanks to the demon-slaying and demon-slaying system, you can slay demons and obtain the lifespan of the slain monsters for practice deductions. But the result of killing one monster beast is the same as killing a hundred weak monster rabbits. Why not choose the latter? Many years later, Fang Lin, standing at the top of the Demon Sect and overlooking all living beings, said: "My achievements are all due to my pure heart of slaying demons for the world!" Queen Ant: "Oh my god, my ant tribe and Fang Lin are at odds with each other!" Demon Rabbit: "Oh my god, my rabbit clan and Fang Lin are at odds with each other!"