Cao Kun frowned slightly: "These things may be niche, but they're not exactly rare in China. And you're asking for 100,000 for this?"

Qin Guangping said with a bitter face, "Brother, many people don't know what this thing is. I had to ask a lot of people for help before I could find someone to help me."

These connections may seem free, but in reality, they're the most expensive thing.

Cao Kun: "Alright, alright, I'm too lazy to argue with you. 80,000, or I don't want it."

Qin Guangping: "Brother, I didn't take your deposit this time. You can't haggle over the price after you've already received it. If you don't want it, who am I going to sell it to?"

Cao Kun: "Don't try that on me. I know you too well. Even 80,000 is a huge profit for you. Just tell me if you're going to sell or not."

"Alright, you're the only one I'll take, brother. If it were anyone else, I'd rather not sell than lose face." Qin Guangping said as he quickly packed Cao Kun's bag: "Card, cash, or check?"

"cash."

Cao Kun flicked his hand, and a stack of US dollars appeared in his hand, which he piled up in front of Qin Guangping, exactly $80,000.

Qin Guangping was startled: "Brother, are you a magician?"

"More or less," Cao Kun replied casually, picked up the bag, and left.

Back home, Cao Kun opened his suitcase and took out the three ceramic jars.

Now, only a lizard, a snake, and a scorpion remain in the three earthenware jars.

At the very beginning, each of the three jars contained a hundred items.

Cao Kun opened the jar containing the lizards. The lizards, which were originally only the size of a palm, had grown to almost twice their original size after devouring the other 99.

Seiko Yamashita discovered that the contents of the container were a lizard, which piqued her curiosity.

She came over and took a look, then exclaimed, "Master, its eyes are so fierce, and it has such a strong aura of menace!"

Indeed, after devouring 99 of its own kind, this lizard became incredibly bloodthirsty, with extremely fierce eyes and an aura of menace emanating from it.

Suddenly, Yamashita Seiko remembered something: "Master, is this the legendary Gu?"

“No,” Cao Kun said, “it has only become qualified to become a Gu.”

Cao Kun put the lid back on and began processing the materials.

This batch of materials is mostly composed of herbs.

Just as Cao Kun said, this thing isn't too expensive in China.

The expensive ones are for people who know about this stuff.

Cao Kun had never heard of these things before.

I only learned about these things after I obtained the Gu poison technique.

Then, he gave the list to Qin Guangping and told him to go and find it in China.

I specifically mentioned that it would be best to go to western Hunan.

Even so, it took Qin Guangping a lot of effort to find it.

Even in western Hunan province, there are very few people who know how to raise Gu poison anymore.

Even so, it's only because Cao Kun only raises ordinary Gu. If he were to refine some rare Gu, not only would fewer people recognize the materials, but the probability of finding them would be even smaller.

By evening, Cao Kun had turned those materials into a pot of mud.

Cao Kun dripped three drops of his own blood into the container, then opened his mouth and uttered a passage of obscure and incomprehensible words.

The young monk was completely bewildered.

Although she didn't understand Chinese very well, she could still tell that it wasn't Chinese.

She wanted to ask, but dared not disturb Cao Kun, so she could only wait quietly.

Cao Kun read for several minutes before finally stopping.

At this moment, the sacred son of the mountain noticed that the pot of mud had changed.

There seemed to be a strange aura about it. She couldn't describe exactly what it was, but she could feel that it was very different.

Seeing Cao Kun open his eyes, the Holy Son from the foot of the mountain hurriedly asked, "Master, what did you just recite?"

Cao Kun: "This is ancient shamanic language, a language unique to ancient Chinese shamans, carrying a mysterious and powerful force."

Yamashita Seiko exclaimed in surprise, "There is such a language?"

Cao Kun opened three jars and fed each of the three Gu embryos a small lump of "mud".

After the three Gu embryos finished eating their companions, they hadn't eaten for a long time, and quickly devoured the three lumps of "mud".

Cao Kun put the lids back on, sat cross-legged in front of the three jars, and took a deep breath.

A miraculous thing happened: Cao Kun's belly swelled up like a balloon.

Then, his stomach began to churn like waves.

At first glance, this surge seems to have no pattern, but upon closer inspection, it seems to carry a special rhythm.

It swells up here and deflates there very quickly.

During this process, Cao Kun opened his mouth and naturally made some sounds.

Upon hearing this voice, the Holy Son of the Mountain felt his blood surge and he felt somewhat uncomfortable.

She listened intently, enduring the discomfort, and discovered that the sound resembled both thunder in nature and the roar of some wild beast.

Upon closer listening, it didn't sound like any of them, and I couldn't quite put my finger on what kind of sound it was.

Suddenly, a sound came from the three jars.

It seems to be the sound of those three things hitting the jar.

Seiko Yamashita was puzzled; why were they hitting the jar?

After thinking about it, she understood; they must be in great pain and discomfort right now.

As a human being, she felt so uncomfortable hearing that sound, let alone these Gu embryos.

The sounds coming from the three jars grew increasingly dense, gradually merging with the sounds emanating from Cao Kun, achieving a strange frequency.

At this moment, the Holy Son of the Mountain noticed that his blood and qi were surging even more violently.

She wisely left the place.

She walked quite a distance until she could no longer hear any sounds from there before her blood and qi gradually calmed down.

"That's amazing."

Seiko Yamashita sighed inwardly, "Just some sounds are enough to make me unbearable."

"Master is getting more and more powerful."

"But I remember scorpions don't have hearing, so why would it feel pain?"

Fifteen minutes later, Cao Kun stopped talking, and his stomach returned to normal.

Cao Kun opened the jar and looked inside. The three poisonous creatures lay listlessly at the bottom of the jar, their bodies stained with blood, but their malevolent aura was even stronger.

Even more surprisingly, they are smaller than before.

Cao Kun nodded in satisfaction and put the lid back on.

The Holy Son of the Mountain walked in, saw that it was over, and asked, "Master, is this the Gu refining technique?"

Cao Kun nodded: "That's right."

Seiko Yamashita: "What was that sound just now? It made me feel so uncomfortable."

Cao Kun: "That's the sound of Gu, a sound specifically for Gu to hear. The various magical abilities of Gu don't come from nowhere."

Impossible. It's impossible to gain powerful abilities simply by consuming one's own kind.

This is produced slowly through a combination of medication and special methods.

These common Gu poisons are relatively simple.

There are some powerful Gu poisons, and all sorts of incredible methods of their creation.

"How amazing!" Yamashita Seiko exclaimed sincerely. "How long will this take?"

Cao Kun: "These types of Gu, combined with medicine, are administered for 15 minutes each day for a total of 21 days."

If one is willing to sacrifice their own life for the Gu, the process can be accelerated to seven days.

However, such a Gu (a type of poisonous insect) cannot live for long; it will eventually run out of potential and die.

The Holy Son of the Mountain asked, "Master, are you planning to complete the full twenty-one days of training?"