"Ding! Killed a G-rank ghost, gained 300 experience points."
"Ding! Killed a G-rank ghost, gained 300 experience points."
After consuming two undead, Cao Kun immediately received a notification in his mind.
This time, there were only experience points, no other rewards.
Instantly, the remaining undead were overcome with fear and quickly retreated, leaving the demon doctor to Cao Kun.
The demon doctor had become extremely weak, his soul was incomplete and almost completely transparent.
He looked at Cao Kun with extreme weakness and begged for mercy, "Let me go, I'll do whatever you say."
Cao Kun: "Didn't you want to benefit the world? Why do you have to test all your methods on me? Is that not acceptable?"
The demonic doctor said, "I'm useful to you. I can help you kill people. I know a lot of tricks, and I can definitely help you."
"Your soul is more useful to me."
Cao Kun grabbed the demon doctor, opened his mouth, and used the "Ten Thousand Evils Condensing Technique".
Amidst a piercing scream, the demon doctor turned into a wisp of green smoke and was swallowed by Cao Kun.
"Ding! Killed an F-rank ghost, gained 3000 experience points."
"Ding! Killed an F-rank ghost, obtained the Yin Talisman Technique."
Note: The talismans created by the Yin Fu Technique are evil talismans, treacherous talismans, and hidden talismans, possessing various insidious abilities. Please use them with caution.
Upon hearing the voice in his mind, Cao Kun laughed.
"So this guy is an F-rank ghost, he's gone above and beyond, no wonder he's so powerful."
As for the "Yin Fu Technique," now is clearly not the time to study it.
Cao Kun looked at the remaining spirits. Originally there were more than twenty of them, but now only a dozen or so remained.
The vast majority of them were seriously injured and their bodies were in a state of near collapse.
Cao Kun thought for a moment, then reached out and grabbed the heavily injured and helpless undead, swallowing them all whole.
"Ding! Killed a G-rank ghost, gained 300 experience points."
"Ding! Killed a G-rank ghost, gained 300 experience points."
...
The remaining five undead changed their expressions drastically, retreating rapidly to the doorway, their faces full of vigilance.
Cao Kun: "Why are you running? They're going to disappear soon anyway."
I avenged them, and they repaid me with their souls. What's the problem?
That's what they said, but the remaining five spirits were still filled with fear and trembling all over.
"You have avenged your great grudge, and I have fulfilled my promise to you." Cao Kun gave them a deep look and said, "I'm leaving."
Cao Kun left without hesitation and quickly disappeared from sight.
The remaining five undead still dared not relax.
After waiting for more than ten minutes without seeing Cao Kun return, they finally breathed a sigh of relief.
They looked at each other and found that neither of them showed much joy at having avenged their great enemy.
The fear on their faces was more obvious.
To this day, they still don't know whether they made a profit or a loss.
They descended the stairs cautiously, and soon their bodies tensed up again.
Cao Kun didn't leave at all; instead, he sat down and began cultivating on the central floor.
Cao Kun was originally a fourth-rank demon gatherer, but after consuming so many yin spirits and the demon doctor's yin spirit, his body is now filled with yin energy, and he feels a bloating pain.
He had no time to leave and could only cultivate on the spot.
He wanted to refine this yin energy to increase his cultivation level.
Cao Kun exuded a powerful aura of malevolence, and the five wandering souls sensed a terrifying presence from afar, daring not to approach.
They took a long detour and carefully left the area, afraid of alerting Cao Kun.
More than an hour later, Cao Kun finally opened his eyes.
A hint of joy appeared on his face.
"These evil spirits didn't eat for nothing; they've finally reached the fifth rank of the evil gathering realm."
"This place is not bad either; it's even better for cultivation than my apartment."
"Unfortunately, there are only 5 Yin spirits left now, and their Yin energy has greatly decreased, so their effect is starting to weaken."
Cao Kun muttered a few words to himself and then entered the system again.
He saw that his experience points had increased from 0 to 7400.
Killing the Demon Doctor yielded 3000 experience points. Although the other undead were not as strong as the Demon Doctor, their numbers made up for it, resulting in 4400 experience points.
"Indeed, eating them was the right thing to do."
Thinking of this, Cao Kun turned his gaze, but did not see the remaining five undead.
I don't know where they've gone.
Ignoring them for the time being, Cao Kun focused his attention back on the system.
With these 7400 experience points, Cao Kun noticed that the upgrade buttons for his cultivation level and the "Yin Yang Creation Technique" had both lit up.
This means that both of them can be upgraded.
Without hesitation, Cao Kun immediately clicked the "Upgrade" button next to his cultivation level.
Instantly, a large amount of evil energy violently poured into Cao Kun's body, causing him to feel a throbbing pain.
Before Cao Kun could even adjust to the pain, these evil energies began to rampage through his body again, forcefully impacting his meridians.
"Holy crap, leveling up with experience points is so much more painful than advancing on my own."
Now that things have come to this, there's no use in cursing Cao Kun; he can only grit his teeth and endure it.
Fortunately, while leveling up with experience points is painful, it's not without its benefits.
At the very least, it's simple, efficient, and convenient.
In just a few minutes, Cao Kun's pain disappeared.
He saw that his cultivation level had changed from the fifth grade of the Gathering Evil Realm to the sixth grade of the Gathering Evil Realm.
Cao Kun immediately felt that all the pain he had just endured was worth it.
Unfortunately, after this upgrade, the "upgrade" button next to cultivation level has turned gray again.
The experience points dropped from 7400 to 4200.
"To advance from rank 5 to rank 6, it actually requires 3200 experience points! That's a lot!"
"Last time I had 500 experience points, which allowed me to advance from rank 2 to rank 3. Later, I advanced to rank 3 on my own, but then I didn't have enough experience points."
"If we calculate it this way, it takes 400 experience points to go from second rank to third rank. 800 points to go from third to fourth rank, 1600 points to go from fourth to fifth rank, and 3200 points to go from fifth to sixth rank, which matches up exactly."
"The upgrades later on will cost so much?"
Cao Kun immediately felt a headache coming on.
However, considering that you can devour a ghost once and gain another wave of experience points, which is equivalent to getting two benefits from one ghost, it doesn't seem like a bad deal.
Another piece of good news is that, although there are only 4200 experience points left, the Yin-Yang Creation Technique can still be upgraded.
"Upgrade!" Cao Kun was not going to wait any longer.
Upgrading to the Yin-Yang Creation Technique is painless and much faster.
Yin Yang Creation Technique: Level 3
Experience points: 3200
The upgrade button next to "Yin Yang Creation Technique" has also turned gray, indicating that it can no longer be upgraded.
"Last time, it took 500 points to go from level 1 to level 2, and this time it took 1000 points to go from level 2 to level 3. If it were 1500 points, I would obviously have enough experience points, but I still couldn't go up."
"It seems that it should be 5000 points."
Cao Kun suddenly felt that the system was a bit of a rip-off; upgrading was too expensive.
However, considering how quick and easy the upgrade is, what more could you ask for?
With the Yin-Yang Creation Technique reaching level three, the amplification during cultivation naturally becomes even higher, and the defensive effect against Yin-Yang techniques is also greatly enhanced.
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