C9 He Has Officially Become an Evolver

"System, upgrade my Earth Ability."

Loong Chen shouted in his heart. He had just killed so many zombies, and he had accumulated a large amount of empirical value. Now was the best time to use them.

"Consume 1,000 empirical value, upgrade your Earth Ability to level 2."

"Consume 2,000 empirical value. Your Earth Ability will be upgraded to Level 3