Invincible from the Moment I Started Slaying Demons

Lifespan can be used to deduce martial arts techniques, and slaying demons grants more lifespan.

Shen Zhan transmigrates to a martial arts world. One sword breaks all techniques; one saber slays every demon.

At the pinnacle of the martial way, I rule the world. Across the martial world, let my name be spoken.

I become an immortal among mortals. Demons bow their heads in fear, and from that day on, the world enters an age of peace and prosperity.