"Sizzle, sizzle …"
A large number of undead continued to approach, and at the same time, within a radius of tens of kilometers around Su Chen, raging flames suddenly ignited.
With Su Chen as the center, a blazing sea of fire was formed.
The weak undead were burned to ashes as soon as they stepped into the sea of fire. Even the undead of the Longevity Tribulation would most likely be burned to death on the way through the sea of fire.
Undead without the strength of the Heaven Ascension realm could not pass through this sea of fire unscathed.
After Su Chen unfolded the sea of fire, he did not need to do anything. He just needed to stay in place and let the soul lamp absorb the soul power coming from all directions.
It was quite convenient.
Even if a few undead of the Heaven Ascension realm ran over occasionally, Su Xiaoyao would deal with them. She was full of energy at this time and was eager to show off in front of Su Chen. No matter how many undead came, they would not be enough for her to bully.
The burning of the sea of fire lasted for six hours.
It should be almost dawn by now.
Su Chen looked around and saw that the number of undead coming was very small. It was estimated that more than ninety percent of the undead in the entire mass grave had been burned to death. Those who were left behind were too weak and too slow to come in time. They were not a concern at all.
It could be considered a success.
"Xiaoyao, is it fun to fight?"
Su Chen asked with a smile.
Su Xiaoyao giggled. "It's fun, but this little demon is a little hungry."
"All right, it's about time. We can go."
Su Chen pulled the soul lamp back and was ready to leave the mass grave.
At this time, the brightness of the soul lamp had evolved from the candlelight to the level of an incandescent lamp.
It seemed that there were at least a dozen such mass graves around the City of Soul Lamps. Perhaps Su Chen could find some time to catch all the undead in these mass graves. In that way, the power of the soul lamp might be fully restored.
Just as Su Chen put away the sea of fire and was about to leave the mass grave, he suddenly saw a large pit in the scorched land where the sea of fire burned.
There was an underground palace?
Su Chen's thoughts moved and he immediately went to check it out.
It really was an underground palace, but the area was not large and there were some bones piled up inside.
"These are … saint remains!"
What was piled up in the underground palace were all the bones of Saints.
With a wave of his hand, Su Chen cleared out these saint skeletons and pieced them together, obtaining fifteen complete saint skeletons.
The value of such well-preserved sacred remains was astonishing. Sacred remains could be used to create magic treasures, but they also had other uses. There were even cultivators who would purchase complete sacred remains at a high price and replace them with their own bodies, borrowing the power of the sacred remains to increase their cultivation talent.
However, these were all transactions on the black market. Under normal circumstances, the World of Immortal Cultivators did not allow the trading of Holy Bones. After all, doing so would offend the sages, which was a despicable behavior among Immortal Cultivators.
Of course, if the temptation was too great, there would still be many people who would take the risk out of desperation. This kind of thing was very difficult to prevent.
Su Chen didn't mind making a fortune out of a dead person, but after careful inspection, he discovered that these Saint skeletons had been preserved for too long. The power of the Saint contained within them had long since vanished. The value of such Saint skeletons was limited, and the magic treasures forged from them wouldn't be of much quality. The best use was to grind them into powder and use them as fertilizer.
However, doing so was a little immoral.
Su Chen shook his head. He didn't plan to take these Saint skeletons away. He directly shot out a fireball and burned all of these Saint skeletons.
He put his palms together, bowed forward, and silently chanted the Rebirth Mantra from the Pure Original Source, wishing the owners of these Saint skeletons to transcend as soon as possible.
Just as Su Chen was about to turn and leave, he suddenly discovered a glimmer of light in the ashes.
Su Chen reached out and grabbed, and a dark golden bead with a wrinkled surface appeared in his hand.
It looked like a dehydrated kumquat.
However, Su Chen was still keenly aware that this was a Demon Core.
Although it had lost most of its power after such a long time, it was indeed a Demon Core, and definitely not an ordinary one.
Ordinary Demon Cores couldn't withstand the baptism of such a long time, and their power would have long been exhausted and disappeared.
Appraisal.
"Cloud Dragon Demon Core: The Demon Core of the Heaven's Equal Realm 'Cloud Top Dragon'. Because of the long time, more than 90% of the Demon Power in the Demon Core has been lost, but a trace of dragon soul still remains."
Hiss!
Su Chen guessed that this was a powerful Demon Core, but he didn't expect it to be so powerful. It was actually a Demon Core left behind by a dragon of the Heaven's Equal Realm.
Cloud Top Dragon?
Su Chen thought carefully. There seemed to be some information about the Cloud Top Dragon in Meng Die's memory.
The Cloud Top Dragon was a special branch of the dragon race. It was subdued by the Cloud Top Heavenly Palace in the early years and then domesticated.
Speaking of the Cloud Top Heavenly Palace, it was also a very powerful existence. It was a huge immortal cultivation force in the Vast Thousand Domains, and its status even exceeded that of Spirit Mountain. It was a super immortal cultivation sect with immortals overseeing it.
However, that was a very long time ago. Since the Immortal Realm disappeared, and the immortals disappeared one after another, the Cloud Top Heavenly Palace fell into decline because there was no immortal overseeing it. It was divided up by various greedy forces, and the glory that lasted for tens of millions of years turned into a dream in a day.
The reason why Meng Die knew about the Cloud Top Heavenly Palace was because the Yutian Clan she was from had once participated in the siege of the Cloud Top Heavenly Palace, and obtained a lot of benefits from the Cloud Top Heavenly Palace. It was because of that plundering battle that the Yutian Clan and many other cultivation forces embarked on the road to glory.
The history of the great powers, to put it bluntly, was a history of bloody invasion.
However, Su Chen still didn't know how the Demon Core of the Cloud Top Heavenly Dragon appeared here.
Could it have something to do with this ancient battlefield?
However, this had nothing to do with Su Chen. He had picked up the Demon Core of a Heaven's Equal Realm dragon for free, and there was no need to think so much.
When he returned to Soul Island, the sky was already bright.
Su Chen wanted to immediately go back to study the Demon Core, but Su Xiaoyao insisted that he accompany her to grill fish and watch the sunrise.
Wouldn't she get sick of grilled fish early in the morning?
However, Su Chen was after all a loving father. How could he not satisfy Su Xiaoyao's request?
Grilled fish must be grilled.
Sunrise must be watched.
I'll spoil you until you're a genius.
After eating and enjoying the beautiful sunrise, Su Xiaoyao was finally tired. Su Chen hurriedly sent her home to rest. After watching her fall asleep, he immediately went to the basement and took out the Demon Core of the Cloud Top Heavenly Dragon.
Even if only one-tenth of the Demon Core's power was left in the Demon Core, one-tenth of the power of a Heaven's Equal Realm demon was very terrifying.
Not to mention, there was still a wisp of the Cloud Top Heavenly Dragon's soul left in the Demon Core.
Although the Dragon Soul had been gone for so long that it had already collapsed and couldn't be of much use, just using it to devour the Demon Core's soul power was extremely beneficial to Su Chen.
Perhaps after devouring the soul power, Su Chen could enter the Soul Grandmaster realm in one go.
To advance from a Ninth Stage Soul Master to a Soul Grandmaster required one billion skill points.
Previously, Su Chen was still wondering if he should use skill points to advance, but if he could rely on this Demon Core to advance to a Soul Grandmaster, he could save one billion skill points. Wouldn't that be great?
He immediately went into seclusion to refine the Demon Core!