The appearance of a human spy in the Heavenly Ghost Realm at the beginning was merely a minor ailment, not a significant issue. Two Demon Kings could easily suppress it.
However, the current tremors of the demonic veins beneath Demon God Mountain were a matter of great importance to the entire demon race, and could not be neglected.
All the powerful beings on Demon God Mountain immediately flew towards the location of the demonic veins at the foot of the mountain.
When they arrived at the underground cave, they saw that the "Fairy Undressing" planted in the cave to guard the demonic veins had been chopped down and lay in disarray.
Above the underground dark river, a black giant dragon writhed violently.
This black dragon was now only the upper half of its body; the rear half, along with its tail, had been severed.
Demonic energy continuously leaked from the dragon's wounds.
Amidst a patch of broken thorny bushes on the ground, a skeleton, its flesh long gone, turned its head to look at the approaching Demon Kings.
The skeleton's mouth stretched open, revealing a silent mockery.
Then, the skeleton began to shatter, crunching and grinding into a pile of fine dust.
Several Demon Kings quickly extended their hands, capturing the pulverized bones in their palms, only to find that the person's soul had also been shattered and dissipated, leaving nothing behind.
"Who did this?"
"I seem to have sensed the presence of spatial laws."
The Demon Kings searched the area briefly but found few useful clues.
"The person's soul has completely scattered."
"The dragon's tail has likely been hidden by spatial laws."
"It will be difficult to find the dragon's tail in a short time."
Only traces of spatial law fluctuations remained at the scene. Following these fluctuations should lead to the lower half of the demonic veins.
Laws such as space, time, life and death, karma, and devouring were all supreme laws of the universe.
Although they had higher cultivation and had comprehended the Great Dao, it was still difficult for them to break through spatial laws in a short time and find the hidden item.
However, priorities had to be set. The demonic veins had suffered a severe blow and had to be saved first.
Otherwise, once the demonic energy within the veins dissipated, the veins would be completely destroyed.
"Let's all work together to seal the wounds of the demonic veins first, and then search for the lower half of the dragon's tail."
A Demon King scratched his arm for a moment before speaking to the others.
A large number of "Fairy Undressing" were planted here. The toxins spread within this confined space, and even they, the Demon Kings, were not immune to poisoning.
No one could endure staying here for long.
The Demon Kings and Demon Lords present all acted in unison, sealing the wounds of the demonic dragon…
…
Xiao Fei and the others guarded Demon God Mountain. When they sensed the violent tremors from below,
They saw the Demon Kings and Demon Lord powerhouses on Demon God Mountain all rush down the mountain in a frenzy.
"There are still 8 Demon Kings on Martial God Mountain, but only 7 have appeared."
"It seems Nightfall hasn't shown up!"
Xiao Fei and the other two guarded the entrance to Nightfall's cave but did not see him emerge.
"Bloodthirsty, do you have any way to trick Nightfall into opening his door?"
Time was running out for them. Xiao Fei had already decided to force his way in.
However, Nightfall's cave was protected by a formation. Opening this formation would take some time.
Bloodthirsty bit her lip, hesitated for a moment, and then nodded heavily.
"Alright! Ji Wudi, Nightfall will be your responsibility. As soon as the cave door opens, you charge in. Your primary target is to engage Nightfall."
"Bloodthirsty, you are more familiar with this place. You will come with me to rescue the person."
"After rescuing the person, we will retreat into the Creation Jade Plate simultaneously. Do not engage with the enemy."
After Xiao Fei assigned tasks to both of them, Bloodthirsty transformed, reverting to her original form, and walked towards Nightfall's cave alone.
"This little turtle is hiding in his cave. Even if the demonic veins of Demon God Mountain exploded, he didn't even come out to take a look.
Brother Xiao, do you think this woman can trick the door open?"
"Whether she can or not, let's try first. If it doesn't work, we'll force our way in."
At this moment, Bloodthirsty had reached the cave entrance. She took out a communication talisman, which transformed into a stream of light and flew into the cave.
After a moment, the tightly shut cave door opened completely.
"So easy!"
Ji Wudi exclaimed, and his body transformed into a golden light, charging into the cave.
As Xiao Fei rushed out from his hiding place, he heard a loud explosion from within the cave, indicating that Ji Wudi had already engaged someone.
At this time, Bloodthirsty also slipped in through the cave entrance, with Xiao Fei closely following.
Upon entering the cave, they first saw Ji Wudi wielding a golden saber, slashing forward with each strike imbued with immense power.
In front of Ji Wudi was darkness, which continuously surged towards him, only to be dispersed by his golden saber.
As Bloodthirsty entered the cave, a voice emerged from the darkness.
"Hahaha… Bloodthirsty, you've finally returned!
This time, let's see how you can escape my grasp!"
"One day, I will reclaim everything I have lost!" Bloodthirsty replied coldly.
"Hahaha… you have no chance!"
"If I have no chance, I will destroy it myself. No one will succeed!"
After Bloodthirsty uttered these words coldly, she ignored the encroaching darkness and walked deeper into the cave.
There was a deathly power within the darkness. As Bloodthirsty walked through it, her body began to slowly age and wither.
But Bloodthirsty paid no mind to this and continued to press forward.
Xiao Fei, having mastered the Great Dao of Devouring, quickly followed behind Bloodthirsty.
When the darkness surged towards him, a massive vortex formed around Xiao Fei, devouring all energy, including the darkness.
As the darkness was devoured by Xiao Fei, the symptoms of aging on Bloodthirsty disappeared. The wrinkles on her face began to fade, and her skin became rosy and radiant again.
The two quickly passed through the area covered by darkness. Bloodthirsty led Xiao Fei through the cave, making many turns.
Finally, they reached the end of a corridor, blocked by a stone door.
The stone door was protected by numerous formations, which Bloodthirsty tried but failed to open.
"If I'm not mistaken, the person should be inside here!"
Xiao Fei did not hesitate. He stepped forward and unleashed his full power to break the formation.
Nightfall had not set up the formations in his cave particularly skillfully. Xiao Fei only took half an hour to decipher the formation.
Pushing open the stone door, they saw Huang Feifei sitting cross-legged on a jade chair, surrounded by rolling demonic energy, her face contorted.
"Feifei! I've come to save you!"
Xiao Fei shouted excitedly, but Huang Feifei on the jade chair showed no reaction.
"You'd better not disturb her lightly!"
As Xiao Fei was about to step forward to examine Huang Feifei, Bloodthirsty's cold voice came from behind him.
"What's wrong with Feifei?"
Xiao Fei turned back, looking at Bloodthirsty with a questioning gaze.
Although Bloodthirsty was now his subordinate and not very strong, she had once been a Demon King-level powerhouse and was very knowledgeable.
"I don't know her specific condition, but as an immortal, she has been invaded by a vast amount of demonic energy. A fierce conflict is occurring within her, and she could explode at any moment!"