Cultivating Longevity by Spending Lifespan in a World Overrun by Monsters

After transmigrating into a demon-ravaged age, Wang Dong gained a golden finger that let him consume his lifespan to improve his proficiency.

Looking at his already meager lifespan, Wang Dong nearly cried:

What a useless golden finger! I took up martial arts to stay alive, and now you want me to risk my life to train?

But after he happened to kill a pig demon, a whole new world opened up to him.

Ding! Killed a pig demon at the early Mortal Transformation stage. Gained 63 years of demon lifespan.

Consumed demon lifespan for cultivation. Your Mountain-Shaking Fist proficiency: 1, 1, 1... Mountain-Shaking Fist mastered!

Ding! Killed a tiger demon at the late Spirit Awakening stage. Gained 237 years of demon lifespan.

Consumed demon lifespan for cultivation. Your Blazing Sun Saber Art proficiency: 1, 1, 1... Blazing Sun Saber Art mastered!

Ding! Killed the Black Mountain Old Demon at the peak of the Shapeshifting stage...

The demons: You think you're so noble, burning our lives to cultivate?

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