Just when Yun Feng and Shangguan Yi were about to leave, suddenly, Elder Zheng got up and put down the jar, as if he was looking for something. Yun Feng patted Shangguan Yi on the shoulder, meaning to let Shangguan Yi stay and see what Elder Zheng wanted to do first.

Sure enough, Elder Zheng took out a palm-sized jar in the bottom corner of the shelf. Elder Zheng opened the altar, and Shangguan Yi found that there were centipedes and scorpions in the altar. Centipedes and scorpions are usually made into Gu worms by humans, and it is obvious that these centipedes and scorpions left behind are the most poisonous. Elder Zheng didn't think about it, so he poured the centipede and scorpion into the jar containing the Gu King.

It seems that Elder Zheng not only used his own blood to feed this Gu King, but also fed it with these things to enhance the Gu King's toxicity.

However, Elder Zheng did not continue to observe, and after putting in the centipede and scorpion, he closed the lid and left the medicine room.

Shangguan Yi and Yun Feng looked at each other for a second, and then flew into the medicine room.

The two of them obviously found that Elder Zheng seemed to have come to the medicine room in the middle of the night, just for this Gu King, and they both thought that Elder Zheng was worried that the Yin Yang Gu would be discovered, and they would come to the medicine room because they were worried. It seems that the old fox is indeed the old fox. The Yin Yang Gu must have been placed in a very safe place by them, perhaps in the secret room of the medicine room. They didn't dare to touch the contents of the medicine room easily, for fear that the elders would find out that someone had entered the medicine room. Without determining where the chamber was, they left the chamber first.

"Senior brother, the Gu worm in Elder Zheng's hands seems to be unusual." Yun Feng said suspiciously.

"The Gu worm in Elder Zheng's hand is the Gu King, and this Gu King seems to have been raised for a long time. You know that the Poison Medicine Valley is mainly based on poison, and I have a lot of Gu Kings in my hands, but most of them are normal refining. And the Gu King in his hand didn't just seem to be fed with blood and five poisons, he always felt that this Gu King should often go to mass graves, and the green on his body was full of oozing glow. If you want to kill this Gu worm without effort, there is only that Ten Thousand Gu King. When the time comes, the Elder will also be counterattacked. Shangguan Yi explained with a frown.

"Could it be that the Ten Thousand Gu Kings are also eating carrion corpses in mass graves? Otherwise, even if it was the Ten Thousand Gu King, he wouldn't be so powerful. Yun Feng asked puzzled.

"Senior brother, do you know that Elder Qu only hibernated the larvae of the Ten Thousand Gu King at the beginning, and did not raise Gu? Because, the Ten Thousand Gu King needs to cultivate Gu with his body. You know that some Gu worms need to be raised with their bodies, and ordinary Gu worms can be drawn out of the body from the body. And there are also some Gu refiners who will use Gu worms as natal Gu. You also know that if the natal Gu is in danger, then the Gu refiner will also be in danger. Usually they will hide the Natal Gu in a place that is not easy to be discovered, otherwise after being discovered by the enemy, they don't need to officially engage the Gu Refiner in battle, as long as they destroy the Natal Gu, the Gu Refiner will be killed. And if the Ten Thousand Gu King wants to parasitize in a person's body, he can only raise it as a natal Gu. The Ten Thousand Gu King didn't need to be hidden, and moreover, it could return to the Gu Refiner's body at any time. It's just that the Ten Thousand Gu King will continue to suck the essence blood of the Gu Refiners, and it will also affect the Gu Refiners' thoughts. It will make Gu refiners become irritable and bloodthirsty, and even kill. Therefore, Elder Qu did not easily refine the Ten Thousand Gu King. Shangguan Yi thought of an important point and said.

"So, if it's really Ting'er who has the Ten Thousand Gu King in her hands, and she has already played Gu on people, does this mean that the Ten Thousand Gu King is Ting'er's natal Gu?" Yun Feng asked suddenly.

Shangguan Yi knew that Yun Feng might not believe it, so he nodded and said, "Senior brother's guess is not wrong, if Ting'er deliberately attacked Ah Zi, then it means that Ting'er has linked the fate of the Ten Thousand Gu King with herself." It's just that I don't know when she started raising the Ten Thousand Gu King. ”

Shangguan Yi actually wanted to know how long the Ten Thousand Gu King had been Ting'er's natal Gu, if the Ten Thousand Gu King had just become her natal Gu, then it would be relatively easy to get rid of the Ten Thousand Gu King. However, if Ting'er had refined the Ten Thousand Gu King since she was a child, then this Ten Thousand Gu King was indeed not so easy to deal with.

"Senior brother, can't you see what kind of Gu worm is in the Yin Yang Gu?" Yun Feng asked suddenly.

Shangguan Yi shook his head, and then said, "Unless I get that finished prescription, I won't find any traces of blood, otherwise I don't dare to determine the type of Gu worm." You also saw that this Gu worm was black and red, and it also stretched out two wings. It's like a mutated Gu worm, which makes people's scalp tingle when they look at it. Moreover, the Gu worm was actually able to influence my multicolored Gu's mind and control itself to self-harm. Moreover, no matter how you look at it, it doesn't look like the dark green Gu King just now. Who knows what Elder Zheng has refined over the years. ”

Yun Feng had no idea for a while, and now it seems that there are more and more troubles, what kind of ambitions are hidden by these elders, and why do they do this.

Shangguan Yi thought for a while and said, "Senior brother, you go back to rest first, and I'll also go back to the medicine room to see the Gu worm." We'll come back to Elder Zheng tomorrow, and I'll be ready, and I'll probably find the secret room then." I think it seems that this Gu King raised by the Elder is not against us, but is used to defend against the Great Elder. ”

Through these several follow-ups, they found that the Great Elder was a ruthless person, and if one day their conspiracy was discovered, or they wanted to betray the Great Elder, the Great Elder would not hesitate to kill them. Therefore, Shangguan Yi would think of this Gu King that Elder Zheng had raised to save his life.

Yun Feng nodded, and then said, "You're right, it seems that the four of them are not so united. That's it, we'll come back tomorrow. ”

Yun Feng returned to his courtyard, and at this time he heard someone outside say, "Gu Master, Senior Sister Ting'er came to you in an urgent matter just now. ”

Yun Feng frowned, why did Ting'er look for him in the middle of the night? So he hurriedly asked, "When can she say it?" ”

The boy shook his head, and then said, "I said that you are asleep, and if you have anything to tell me first, I can convey it to you." However, she didn't seem to trust me very much, just shook her head, and then left with a sad face. ”

Yunfeng didn't know what Ting'er wanted to do, maybe he just wanted to lead him to his yard. So, Yun Feng waved his hand and said, "You can go and rest too." ”

The medicine boy nodded, then retreated to rest. Why avoid making people wonder, Yunfeng did not light the candle, but fell asleep directly.

When Shangguan Yi returned to the courtyard, he also went directly into the medicine room. The jar in the medicine room seemed to have stopped moving, and Shangguan Yi slowly opened the jar lightly.

He first opened a gap and found that there was no shadow of Gu worms at the bottom of the altar, so he opened the altar, and when he saw the scene inside the altar, he gasped.

Because although the size of that Gu worm had not changed, the color had changed to the multicolored Gu he had fed before, and what appeared on his body was colorful, and it looked very gorgeous. Only the wings are no longer black, but a faint green. And Shangguan Yi saw it carefully, this Gu worm had grown a sucker, which seemed to be able to suck blood. This...... What kind of monster is this Gu worm in the Yin Yang Gu? That night, he couldn't figure it out, and he couldn't sleep. simply didn't sleep, and went back to the study to take out all the books about Gu poison, wanting to find the information about this nematode.

Until the early hours of the morning, Shangguan Yi did not find any clues about the nematode, and just when Shangguan Yi wanted to give up, he found the diagram of this nematode in an inconspicuous manuscript. Shangguan Yi immediately came often, he looked at the picture seriously, and then looked at the text below and read it.

It turned out that this nematode was called a velvet Gu worm, and it was a Gu worm from their tribe. This Gu worm is very rare, and only people from the royal family can refine this kind of Gu. And this kind of Gu worm is very good at camouflage, and after sucking other Gu worms, it will transform into a dead Gu worm. Moreover, the velvet Gu will shed its shell, just like the cicadas in summer. Each time the shell is shed, the toxicity becomes more intense. And the prescription they wanted to refine was actually a Gu that could control people's hearts and souls. It just so happens that this kind of Gu is a Gu worm that can confuse people's hearts, so this Gu worm is indispensable in the prescription. Originally, the prescription was used for refining immortality, but later, there was turmoil in the clan, and the tribe was wiped out, and the prince who escaped looked at the prescription of immortality and felt a little ironic, and after seeing the velvet Gu in the prescription, he changed the prescription and began to refine. The purpose of the medicine refiner is very clear, that is, in the future, if the Yin and Yang Gu is cultivated, the entire clansmen of the Medicine King Valley will return to the tribe from the Central Plains to take revenge. With the Yin Yang Gu, after they go back, they only need to secretly put Gu in their food, and then give an order to let them kill each other to recapture the tribe. However, later, the prince's heart changed, and he felt that living in the Valley of the Medicine King was much more comfortable than fighting for the throne in the tribe before. Moreover, he also felt that the yin and yang Gu on the prescription was too vicious, so he put the prescription into the ancestral hall. No one thought that after a hundred years, someone would actually refine the Yin Yang Gu of the prescription, and it would even go to the next level.

Shangguan Yi then understood why the prescription for the Yin Yang Gu came from, he looked at the notebook in a daze, could it be that the Great Elder still wanted to return to the tribe? It's just whimsical, it's been a hundred years, will they be able to find the tribe? What if you find it? Do you want to use the Yin Yang Gu to kill all those people?

Shangguan Yi shook his head, then turned another page and continued to look down, only to see the picture of the Black Armor Gu King.

It seems that what he said is not wrong, the Ten Thousand Gu King must be refined by the method of Natal Gu. However, when he was in the tribe, the Ten Thousand Gu King could only be refined by the king of the tribe and become the king's natal Gu. This is naturally to protect the king will use the Ten Thousand Gu King, and those who can become the king will not be swallowed by the Ten Thousand Gu King. And the Velvet Gu will also become the natal Gu of the loyal ministers, and the person who owns the Velvet Gu can only be the successive valley masters of the Poison Medicine Valley. Shangguan Yi seemed to understand that the Ten Thousand Gu King was only able to be refined by the Medicine King Valley Lord, and the Velvet Gu was also qualified to be refined by the Poison Doctor Valley Lord. Then, the velvet Gu in Elder Zheng's hand must have been stolen. What about the Ten Thousand Gu Kings in Elder Qu's hands?

Shangguan Yi closed the note, carefully put it away, and then went back to the room and fell asleep. Because he didn't sleep all night, he didn't wake up until the afternoon.