As Long as I Outlive You All, I’ll Become Invincible

Li Feng transmigrated to a fantasy world and obtained an Immortality System.

The System's only function was to increase his lifespan.

Run three kilometers, gain 250 calories' worth of lifespan.

Throw a punch, gain 1,875 joules' worth of lifespan.

"A gentleman can wait a thousand years to avenge himself."

By the time Li Feng found his enemy a thousand years later, the only thing he could do was dance on the enemy's grave!

This novel and its characters are entirely fictional. Any resemblance is purely coincidental. Do not imitate.