Kapitel 391: Chapter 87 The Usage of the Demon King

After repulsing the third wave of attacks, Liu Longtao still stood at the top of the central staircase, hands behind his back, calmly looking down and quietly regulating his True Yuan to recover.

"Damn it, they're just like cockroaches—no matter how many you kill, the same number comes back..."

As Lord Master was cursing inwardly, he suddenly heard a ghoul's voice beside his ear:

"Master said, please conserve a bit of your True Yuan and don't squander it too fiercely."

"Heh," Liu Longtao said with a cold laugh, "I still have at least seventy percent of my True Yuan."

He disdainfully glanced downward and began to calculate again in his mind.