The toxin is extremely potent, causing those Evil Ghosts to freeze in place instantly, then each one of them fell to the ground, completely unable to move.
They wouldn't die so quickly, but their bodies lost all strength, suppressed into a state of extreme weakness, unable to even twitch.
The toxin continued to spread, and all the Evil Ghosts along the way collapsed.
Soon, the toxin infiltrated the underground space.
The commotion was quickly noticed by those Ghost Emperors.
Since the toxic gas was visible to the naked eye, and all the Evil Ghosts where it passed would fall, it was hard not to notice.
"Emperor Sovereign, something's wrong, look at that!"
"Emperor Sovereign, it seems like there's toxic gas eroding, those Ghost Emperor Evil Ghosts have no power to resist."
Some Ghost Emperors and Ghost Kings immediately shouted loudly.
Bao Shi and the other three Emperor Sovereigns whose cultivation had recovered also awoke immediately.
