That was true enough.
The underworld was so vast—how could its cultivation arts be cracked so easily? If one could break undead ghostly Qi merely by relying on supreme Yang, then the underworld would have collapsed long ago.
For it to have endured until today, undead ghostly Qi had to possess some unique strength.
"These eighteen thousand supreme-Yang creatures' souls have fused into the undead ghostly Qi, making it Yin within Yang and Yang within Yin. It truly won't be easy to dispel. But that isn't entirely the case. Ghosts are still terrified of supreme-Yang things. They hide the souls of these eighteen thousand supreme-Yang creatures in the deepest parts of their bodies. If those souls can be destroyed, then breaking this undead ghostly Qi will become much easier."
Yang Chen began calculating inwardly.
The key was how to draw out and dispel the souls of those eighteen thousand supreme-Yang creatures within the undead ghostly Qi.
In truth, whether or not he could break undead ghostly Qi was of little importance to him. He did not fear undead ghostly Qi. Once his life and death Dao Intent spread out, undead ghostly Qi amounted to nothing.
But could the other humans do the same?
If he could make a breakthrough in this regard, it would be a breakthrough for humanity as a whole. The ones to benefit then would be all humankind!
Yang Chen still wanted to continue researching.
But just then, a voice suddenly sounded outside. "Ghost General Mu Heng, I wish to enter your Ghost Cave. Open the cave entrance."
Yang Chen's heart skipped a beat at those words, but he quickly calmed down.
The voice belonged to the captain of a nearby patrol, Night Raid Ghost General.
Night Raid Ghost General's relationship with Ghost General Mu Heng was