After thinking for a while, Cao Kun figured it out.
It should have been 6400 points.
However, his cultivation during this period, coupled with his previous devouring of the old woman ghost, had already brought him quite close to the seventh rank of the Gathering Evil Realm.
Therefore, the upgrade will no longer require 6400 points.
"That's quite humane."
Cao Kun laughed, feeling that the system was very fair and just, and wouldn't swallow up experience points.
Currently, there are 6200 experience points remaining, and the Yin-Yang Creation Technique can still be upgraded.
Cao Kun didn't waste any time and clicked the upgrade button.
Yin Yang Creation Technique: Level 4
Experience points: 1200
The Yin-Yang Creation Technique has been upgraded to level four, resulting in higher amplification, stronger defense, and an additional ability.
If anyone tries to harm Cao Kun using Yin-Yang techniques, they will suffer the backlash of the Yin-Yang Creation Technique.
He will suffer the same kind of backlash as anyone who tries to harm him.
Of course, this is on the premise that there is not a significant difference in the cultivation level and Yin-Yang techniques between the two parties.
Otherwise, the difference in cultivation level can be forcibly resisted.
"That's pretty impressive."
Cao Kun became excited; the Yin-Yang Creation Technique was bringing him more and more surprises.
After exiting the system, Cao Kun examined the newly acquired "Ghost Raising Technique" in his mind.
After figuring everything out, Cao Kun understood why the system had warned him that this technique was extremely vicious and ruthless.
The Art of Raising Ghosts allows you to raise existing ghosts or create your own.
The most effective method is to create your own ghost.
The most common practice is raising a ghost child.
Little ghost, as the name suggests, is a ghost that is a child transformed into a ghost.
In many films and television shows, the character of Xiao Gui is portrayed as extremely cute.
But in reality, most children born into poverty have extremely pitiful backgrounds.
There are usually two types of little devils.
One type is infants aged 3 to 7 months who die naturally.
These babies, who have just been reincarnated as adults and are about to enjoy life, suddenly die young, and usually harbor great resentment.
Another category is normal children under 7 years old.
This kind of need involves relentlessly torturing and humiliating the person during their lifetime, causing them to suffer immense pain until they die.
Only after death can one retain a lingering resentment, potentially transforming into a ghost.
Next, they burned the corpse's chin with a candle to produce corpse oil.
Then they burned the corpse to ashes, mixed it with corpse oil and other malevolent and evil substances, and used secret methods to summon the child's spirit.
This practice of raising ghost children is common in T country.
There are plenty of "ghost child" brand items for sale over there.
If someone invites the little devil back, they must feed it their own blood every day.
We also need to buy clothes and toys for the children.
In this way, the little devil can help you with some things.
If you forget one day, or upset the little devil, you are very likely to suffer a backlash from him.
As far as Cao Kun knew, there were some people in Hollywood who were secretly raising ghost children.
However, these are all very basic methods.
For a heretical cultivator like Cao Kun, such trouble is unnecessary.
Of course, he wouldn't raise a ghost child.
If you're going to raise one, you'll raise a ghost.
The methods for creating adult ghosts are similar to those for creating child ghosts, but because they are adults, the methods required are more vicious and ruthless in order to achieve their purpose.
The ghost you create yourself will naturally be under your control since you created it from the beginning. It will be more flexible to command and less likely to suffer backlash.
If you are raising an existing ghost, you need to subdue it first.
Even if they are controlled, they are not so obedient, and the probability of being backfired is greater.
"The art of raising ghosts is somewhat similar to the art of refining corpses."
"However, it's more complicated."
"Moreover, since ghosts possess normal intelligence, the probability of them turning on their masters is higher."
"The corpse-refining process has little intelligence and weak spirituality, so the probability of backlash is almost negligible. Unless, one day, it has a fortuitous encounter and is born with intelligence."
Cao Kun summarized "The Art of Raising Ghosts" and "The Art of Refining Corpses".
However, while the art of raising ghosts is riskier, ghosts can do more things.
For example, it can increase various kinds of luck, foresee risks in advance, and even harm people secretly.
These are things that corpse refining cannot do.
However, these things don't come from nowhere. You've increased your luck now, but you'll have to pay it back later.
The more things you do using ghosts, the greater the price you'll pay later.
This is why, in reality, people who raise ghost children rarely have a good ending.
Of course, this has nothing to do with evil practitioners like Cao Kun.
The next morning, Cao Kun went to the bank and deposited a check for $500,000 into his account.
Looking at the extra numbers in his account, Cao Kun smiled.
"It seems we can start crafting a magical artifact now."
In dealing with the old woman ghost, Cao Kun saw his own shortcomings.
It lacks powerful means of attack.
His main method for dealing with ghosts now is to transform the evil energy within his body into powerful malevolent energy and expel it.
Alternatively, one could use the "Myriad Evils Condensing Technique" to forcibly devour the origin of the Yin spirit.
Furthermore, they used Yin Fu (a type of talisman) to attack.
These methods all seem good, but they are all lacking in offensive power.
If one had a powerful magical artifact, this deficiency could be made up for.
"However, let's buy a car first."
Transportation in the US is so inconvenient; it's difficult to hail a taxi, and without your own car, traffic efficiency is extremely low.
Cao Kun was about to go to the car dealership when his phone rang again.
After glancing at the unfamiliar number, Cao Kun pressed the answer button.
“Master Cao, I am Nicole Kidman.”
The other party identified themselves, their tone somewhat aloof.
Cao Kun was a little puzzled. What did Nicole Kidman want with him? "What is it?"
The other party said on the phone, "I need your help with something. Could you come to my place?"
Cao Kun thought for a moment and said, "Come here."
Then she told Nicole Kidman the address of the apartment.
Nearly an hour later, there was a knock on the door of Cao Kun's apartment.
Cao Kun opened the door and saw Nicole Kidman standing at the door wearing a scarf and a mask, covering her nose.
She was alone; she didn't bring an assistant.
Upon entering the house, Nicole Kidman still covered her nose, looking around with a mixture of confusion and disdain in her eyes.
Cao Kun did not feel hurt by Nicole Kidman's disdain.
His heart is not that fragile.
These apartments are full of drug addicts and criminals, so it's understandable that people would dislike such places.
Cao Kun himself disliked this place. If it weren't for the abundant yin energy here, which was beneficial to his cultivation, he would have moved away long ago.
"Master Cao, how come you live in a place like this?"
Seeing Cao Kun close the door, Nicole Kidman took off her mask and quickly put it into her bag.
She frowned and scanned the furnishings in Cao Kun's room: "I thought I had come to the wrong place."
Cao Kun: "This is none of your business."
A day later, Nicole Kidman looked much better, but she was still a little weak.
Nicole Kidman's expression turned slightly unpleasant after Cao Kun retorted.
She wanted to find a place to sit down, but her noble bottom made it impossible to sit, so she could only stand and say, "Master Cao, I would like to ask you for a favor."
Nicole Kidman couldn't sit down, but Cao Kun didn't seem to mind.
He went and made two cups of tea, placing Nicole Kidman's cup on the table.
He plopped down on the sofa, took a slow sip of tea, and then said, "Speak."
Nicole Kidman glanced at the cup of tea, showing no intention of picking it up.
She slowly untied the scarf around her neck.
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