The Spiritual Energy Revives, I Fight Monsters and Upgrade

Occasionally, Long Teng discovered that there was an experience bar in front of him. As long as he killed monsters, he could upgrade infinitely. A warrior in one second, a martial king in a year... As long as there were sufficient resources, he could upgrade infinitely. Practice martial arts, practice combat skills, comprehend magical powers, and even refine elixirs and weapons. No matter how difficult it is, you can complete it in minutes with unlimited upgrades! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.