Yao Yin happily returned to Agarwood Valley with three yin mushrooms, but he didn't know to welcome an uninvited guest. His only apprentice, Paka, with a strange name, had been waiting for him in the valley for days.

Paca is a proud disciple of Yakuin and an excellent expert in pharmacy. However, this expert is different from Yaoyin, and her interest is entirely focused on the development and use of poisons. The style of Yaoyin's pharmaceutical is more theoretical, and it is more obsessed with the pursuit of the pleasure brought by new drugs.

The two masters and apprentices had been getting along very well, but since Paccar revealed his preference for poison in medicine, the old fellow was no longer waiting to see this disciple who was once proud.

As soon as the two masters and apprentices met, Yao Yin's attitude was very cold, he only cared about his own work, and he didn't care about the enthusiastic little apprentice who asked for warmth. Although the two have different aspirations, they are still masters and apprentices who have been together for more than ten years. Paca stayed in the Agarwood Valley for a few days, helping to take care of the master's diet and daily life for a while.

Yakuin saw that Paca was still very concerned and respectful of herself, and his attitude towards her began to slowly change. One day, Yao Yin forgot to feed the white wolf medicine, causing the white wolf to be "paralyzed", which attracted Packa's attention, and the curious little apprentice Paccar asked his dear master for the reason.

Although Yaoyin had the materials to research new drugs, he couldn't find the right way, and when he saw the little apprentice asking, he didn't think much about it, so he told him the origin and discernment of the "Yin Mushroom" that he had obtained by chance.

Yao Yin told Paka the origin of the yin mushroom, but he actually had a thought. I just want to get Packa's attention, and it's best to keep her to study with me. The days of staying alone in the Agarwood Valley are too painful, and if you want to speak, you can only speak to a beast, and the medicine is lonely.

Sure enough, after listening to Yaoyin's story, Paccar was full of curiosity about the mushroom, so he happily stayed in the valley to study the medicinal value of the mushroom.

With the deepening of the research, the two masters and apprentices once again had disagreements, and this time the contradiction has reached the point of irreconcilability. Paca insisted on studying according to the formula of "Drunken Life and Dream Death", hoping that Yakuin would give her the formula, but Yakuin thought that "Drunken Life and Dream Death" was a worthless and terrible drug that was more harmful than poison, and resolutely refused to hand over the formula.

The two of them were at a stalemate, and Yakuin even thought it was a mistake to leave Paccar behind. However, by the time he realized his mistake, it was too late. His little apprentice who did his own thing, took advantage of the time when Yao Yin was sleeping, and stole the formula of "Drunken Life and Dream Death" and the remaining Yin mushrooms!

Yakuin knows that he has made a big mistake that is difficult to make up, and with his understanding of Packa, he will definitely use "drunken life and dream death" to cause trouble. For this reason, he hated himself very much, and the only way he could think of a remedy was to step up research on the antidote to the medicinal properties of "drunken life and dream death".

He rummaged through medical books, and finally found a glimmer of hope in a medical book that also came from the Lingnan barbarians. The medical book mentions a kind of Gu worm, called "drug repellent worm", which can remove the medicinal properties of most non-toxic drugs, and the person who is removed will no longer be affected by the same drug. But the side effect is huge, that is, once the bug enters the human body, there is no way to take it out, and the insect eats an amazing amount.

Although it looks like a chicken rib, as long as there is a glimmer of hope, Yao Yin has to give it a try, he according to the records in the medical book, spent a lot of energy and cherished the medicinal materials, and finally cultivated this "medicine repellent worm".

Just as he was about to use the poor little white wolf as a guinea pig again to test the effect of "repellent insects", a large number of vicious unknown people broke into the Agarwood Valley under the leadership of Packa. They came prepared and caught Yao Yin off guard, so the first generation of Da Yin was imprisoned in his own home.

This group of people of unknown origin firmly controls the Agarwood Valley, and catches a lot of people from all over the world every day, some of the masters directly use "drunk life and dream death" to control them, and do things that they don't know about the hidden medicine, and the other part is directly provided to Paccar to study the "Yin Mushroom".

For a time, Agarwood Valley became a purgatory for the living, and many people were stimulated by yin mushrooms to lose their humanity or become paralyzed. Yao Yin, who was imprisoned, looked at the horrific live experiments that took place in front of him, and was heartbroken, but he was powerless to resist.

The purpose of Paka's imprisonment was to force Yao Yin to tell the location where the mushroom was cultivated. But even if Yao Yin was tortured to the point that he was not human, he would never mention the location of the yin mushroom.

Yao Yin wanted to rescue these "medicine men" trapped in the Agarwood Valley, but he was unable to do anything because he was imprisoned. In order to make up for the catastrophe he caused, Yao Yin promised to take Paca to the place where the yin mushroom was.

Yao Yin is a person who disdains the use of poison, but he can be said to be invincible in the world when he uses poison. Yao Yin led Paka and his party into the mountains, and then relied on the various herbs in the mountains to make poisons, and overturned them one by one when everyone was caught off guard. What the situation was at that time, Yao Yin didn't elaborate, but looking at his face when he mentioned it, it must have been a vicious battle.

Yao Yin escaped from the control of Paka's group, and planned to destroy the Seven Coffins Yin Array that cultivated Yin Mushrooms, but on the way, he met me who was "drunk and dreamed of death", so he started my idea again, wanting to verify the effect of his "medicine repellent" through me.

"However, I have a question, how can I save the other people who have been drunk and dreamed of death when the medicine repellent worm is dead?" I wondered, since the old guy had already used the worm to successfully remove the medicinal properties from my body, why did he use the heart devouring grass to poison the worm?

Yao Yin explained: "You have Xuanyan needles in your body to protect you, I originally wanted to use chaotic water to force the medicine repellent insects to be expelled from your body, but it didn't seem to have much effect, and then I saw that you can actually maintain clarity between the chaos water and the medicine repellent insects, so I thought about using the heart devouring grass to control the effect of the medicine repellent insects in your body, so that you can use your blood to restrain drunken dreams and death." ”

Listening to Yao Yin's words, I was speechless for a while, and it was also replaced by a heartless person like me who cared less, and if I had replaced others, I would have turned my face a long time ago. Again and again, without my consent, my body was used as a guinea pig. It's tolerable or unbearable, but looking at the old guy's righteous appearance, it's not good for me to say anything weird.

"But then again, isn't my blood poisonous?" I couldn't help but think of the death of the mighty serpent at the mention of my blood.

"Although there is the poison of Heart-Eater in your blood, it only takes a few drops of your blood to remove a person's medicinal properties, and the poison cannot kill people. ”

Hearing him say that as long as a few drops, I suddenly felt at ease, if I was like subduing a big snake and letting me go more than a pound of blood, then I wouldn't dare. However, he said that it was only one person's weight, and I asked suspiciously: "So, how many people in the Agarwood Valley are drunk and dreaming of death?"

Yakuin held out five fingers at me and didn't speak. I estimated it in my heart and asked, "Fifty?"

Yao Yin shook his head.

"Five hundred?"

The old man looked at me and was noncommittal, but said something else: "That refining snake must have taken the yin mushroom to have that strange power." Our top priority is to immediately destroy the seven coffins and let this scourge disappear between heaven and earth. ”