The damage caused to his soul here was much worse than when he had been lost in the white mist field.
When he was trapped inside the white mist field his soul was constantly being damaged, but here, not only was he suffering pain, he was also being bombarded with a fierce hostility and all kinds of malicious intent, which was slowly trying to corrupt his mind.
In terms of hardening one’s soul and cultivating spiritual energy, this place was basically a paradise! All he had to do was descend slightly and Yang Kai could clearly feel his spiritual energy being enhanced.
If he could cultivate here for a long time, opening his Knowledge Sea would probably not be problem.
Unfortunately, Yang Kai understood that he could not afford to spend too much time here. If he did, his mind would probably be poisoned by the surrounding evil aura.
After a long period of silence, Yang Kai suddenly had a thought and asked Old Demon, “Do you know of any Soul Skills? One that can be used for defence would be best.”
“I do!” Old Demon readily responded.
“How come you never mentioned something like that?” Yang Kai asked somewhat bitterly.
“The martial skills and secret arts that Old Servant has mastered are all extremely evil, so Young Master has always been quite opposed to cultivating them.” Old Demon replied in a wronged tone.
“Is this soul defence skill like that too?” Inquired Yang Kai.
“Although it could be considered so, but if you cultivate here, then there would be no need for any cruel or evil methods. Since this place is thick with Demonic Qi it is actually ideal for cultivating this skill.”
“Good, no need for further nonsense then, quickly teach me this soul skill!”
“En…”
Old Demon’s memory was still somewhat garbled, so although it had been more than two years since he met with Yang Kai inside the Heaven’s Inheritance Cave, there was still a great many things he could not remember clearly. But in response to Yang Kai’s orders, Old Demon thought long and hard about this soul skill and eventually imparted all of to him.
Soul Palace!
According to Old Demon, if one wanted to cultivate this soul skill, one would have to find some sentient beings, torture them and finally kill them. Only after experiencing fear, hatred, and despair, would these people leave behind lingering souls after their deaths that could be used to cultivate the Soul Palace skill.
A cultivator would collect these remnant souls and forge them into a labyrinth within their own mind.
The rounds of torture and instilled grievances these souls experience were akin to tempering the bricks for the maze, the more resentment they had, the greater the strength of the labyrinth.
After successfully cultivating Soul Palace, the Knowledge Sea of a cultivator would appear to an outsider as a layered structure, filled with twists and turns. This soul skill’s biggest use was no doubt for defense.
But this skill could actually be thought of as a combination of offensive and defensive soul skills.
If one’s enemy used their Spiritual Energy to attack, their Divine Sense would fall into this maze and would never be able to find its way out, gradually being exhausted by the hidden grievances within the Soul Palace.
Soul Palace did not have a grand accomplishment stage because a cultivator could continuously surround their Knowledge Sea with more building blocks to further consolidate and expand the labyrinth.
Its purpose was to guard a cultivator’s Knowledge Sea tightly, forming an impregnable defense.
And this place, filled with such thick hostile Demonic Qi, was undoubtedly the most suitable place to forge Soul Palace bricks.
Studying this soul skill gradually made Yang Kai grin, quickly comprehending it in order to begin cultivating.
After a short while, Yang Kai became familiar with how to use his own Divine Sense to grasp this free floating hostility and use it as the cornerstones for casting his mental maze.
The entire process was actually quite simple, Yang Kai had already cultivated his Divine Sense considerably, so now he just needed to experiment in its usage.
Over the next few days, Yang Kai familiarized himself with manipulating his Divine Sense, pulling a ray of dark evil aura into his mind then according to his own thoughts and ideas transforming it into bricks and tiles, gradually constructing a fortress around his Knowledge Sea.
Just like building a towering palace in real life, wanting to build a palace in his mind followed the same principals, constructing the maze from the ground up.
Gradually becoming familiar with the process, his actions became faster and more agile.
For an entire month, Yang Kai remained within the Coiling Dragon Stream, cultivating his Soul Palace.
Grasping a wisp of demonic Qi with his Divine Sense, bringing it into his mind, and forging it into a brick. After repeating this process thousands of times, his mental labyrinth gradually took shape and slowly expanded.
After one month of painstaking cultivation, Yang Kai could clearly feel that his own Spiritual Energy had strengthened greatly. He could also spread his Divine Sense out a full twenty kilometers from himself now.
One’s Spiritual Energy was very difficult to cultivate, even for Immortal Ascension Boundary masters. Wanting to have great accomplishments with their Divine Sense was as difficult as ascending to the Heavens.
It was significantly harder than cultivating one’s body.
The most common method was to use a soul cultivating skill, or to consume Spiritual Energy enhancing precious treasures.
However, in Yang Kai’s case, loitering in the Coiling Dragon Stream under such harsh conditions to cultivate Soul Palace, and with the assistance of the Soul Warming Lotus, his Spiritual Energy becoming strong was an eventuality.
After another ten days or so, his Soul Palace skill had finally reached an intermediate accomplishment stage.
Although he was still unable to cultivate out his Knowledge Sea, Yang Kai could still clearly feel that surrounding his mind was a thick layer of protection, keeping the most critical parts of his mind secure.
This extra layer of protection was formed from the evil energy emanating from the Coiling Dragon Stream.
But it did not affect Yang Kai.
Because when Yang Kai cultivated this soul skill, all the evil energy had been marked with his aura.
With his Soul Palace completed, Yang Kai naturally couldn’t wait to try it out.
At his current position within the Coiling Dragon Stream, the vicious hostility no longer made any impact on him.