In the secret room, Luo Qing was concentrating on studying the blood he got last night.

When he came back from the Li Mansion with indignation last night, Luo Qing directly asked Hongxia to arrange a secret room for him, and seeing Luo Qing's black face, he thought that he had encountered some trouble, so he didn't ask, and took him directly to the secret room.

As soon as he entered the secret room, Luo Qing buried his head in studying the blood, although his mood was very bad, he knew that he didn't have much time to waste on this small emotion, there were dead people in the city at any time, and he had to quickly find a way to cure the plague.

Luo Qing entered the secret room, stayed overnight, stayed for another day, and didn't come out until dusk today, seeing that he was a little depressed, but the three girls didn't come forward to comfort, because they knew that what Luo Qing needed at this time was not comfort.

Hongyun was already out of the customs in the morning, but she didn't expect that in one night, she really managed to break through, and seeing that Luo Qing was depressed, it was not easy to comfort her, so she changed the topic.

"Brother-in-law, the pill you gave is really effective, you see that I have succeeded in breaking through overnight. Hongyun said to Luo Qing with a smile on his face.

"Well, it's good to break through, but your breath is not very stable, so you have to step up and consolidate. Luo Qing said, but from the tone of his voice, he was still immersed in the emotions of loss.

"Hey, hey, can you be happier, even if my breath is unstable, but at least I have broken through, you should be happy for me!"

Luo Qing barely squeezed a smile: "Hehe..."

"What do you mean, smiling so reluctantly!" Hongyun rolled his eyes at Luo Qing.

"I'm hungry!" Luo Qing said suddenly.

At this time, Hongxia and Qi Lian'er walked over, one of them took Luo Qing's hand, and Qi Lian'er said, "I'm hungry, then let's go eat, the food has already been prepared." ”

After entering the table, Luo Qing immersed his head in eating, and after a while, the entire banquet was almost eaten by him.

Luo Qing stretched his waist, burped loudly, and then said: "Thank you, I'm in a much better mood, my body is dirty, I'll go wash first." ”

The three girls didn't say anything, just glanced at each other, and then smiled.

After walking a few steps, Luo Qing turned around and said, "By the way, Hongyun, I need your favor......

It seems that Hongyun will be wrong, and before Luo Qing finished speaking, he blushed and said: "Ah, brother-in-law, you go to take a bath and ask me to help, people are not ready, besides, my sister will be jealous, she is very jealous." ”

Luo Qing shook his head helplessly, and said with a wry smile: "Can you listen to me finish speaking, I asked you to send someone to help me collect some blood." ”

Hearing this, Hongxia and Qi Lian'er, who were eating, almost didn't laugh on the side, this red cloud is too imaginable.

"Hehe... I would be mistaken. Hongyun looked embarrassed and said, "How much blood do you need?" ”

"You don't need a lot, a small jade bottle is fine, you just want an ordinary person, I want to make a comparison. Luo Qing said.

"Okay, I'll send someone to collect it now. Hongyun said, and got up to arrange people.

"Remember, live human blood. Luo Qing shouted.

"Ouch, I know, brother-in-law, I'm not stupid. "Hongyun thinks Luo Qing is a little verbose, and he doesn't have a good temperament.

......

In the evening, gently pushing away the secret room, Luo Qing walked in again, and the blood samples that Hongxia ordered had already been sent to the secret room, so Luo Qing entered the research again.

Taking out a drop of blood from the small jade bottle on the table, Luo Qing quickly wrapped it with spiritual power, and a drop of bright red blood floated like this.

Luo Qing wants to use spiritual power to separate the blood from the plague in the blood, but the plague has fused with the blood, and it is still quite difficult to completely separate it.

After a while, after consuming some spiritual power, Luo Qing only stripped a very small amount of plague from his blood.

However, even such a small amount of plague is enough for research and comparison.

This is not modern, there is no high-end laboratory equipment, and even if there is, Luo Qing does not know how to use it, so if he wants to observe the changes of the plague, there is only one way.

To test the poison by himself, Luo Qing can only think of this way, this plague can't hurt the people of the sensing realm, so Luo Qing plans to suppress the plague by himself by sensing the cultivation in the later stage, so as to observe the changes when it dies.

Luo Qing feels that no matter what virus it is, only in the process of its evolution or extinction can some clues be observed.

Sure enough, after Luo Qing incorporated the plague into his body, Luo Qing used cultivation to carry out forced suppression, and under Luo Qing's suppression, the plague began to slowly die.

However, what made Luo Qing strange was that in the process of disappearance, the plague was divided into two black gases, and although they both died, Luo Qing obviously felt that the two black gases were not the same thing.

One was an ordinary plague virus, Luo Qing obviously felt it, and the other, although it felt a little familiar, Luo Qing still couldn't be sure.

So Luo Qing went to analyze his uncle's blood again, and only by comparing it could he see more clues.

Separated the blood again, this time Luo Qing increased the output of spiritual power, and the plague that was separated from the previous time was too little, so under Luo Qing's full suppression, it died too quickly, and Luo Qing failed to perceive it thoroughly.

So this time, he wanted to isolate as much of the plague as he could.

After consuming a lot of spiritual power, Luo Qing isolated most of the plague, so he began to test the poison again.

This time, Luo Qing learned to be obedient, and did not suppress the plague with all his strength at the beginning, but used cultivation to suppress the plague step by step.

This time, Luo Qing finally made a major discovery through careful observation, it turned out that this plague was actually thought to be created.

There were two black gases in the plague poison, one was an ordinary plague virus, and the other contained a breath, which Luo Qing was very familiar with, because this breath was very similar to the breath of the Nian Demon who wanted to devour everyone in Southern Regions City a few months ago.

Luo Qing is sure that this is demonic energy, he has heard the elders of the great sects of the Southern Wilderness mention the Demon Continent, it seems that this plague incident should be inseparable from the Demon Continent.

However, or the demonic qi in the plague is very weak, presumably the cultivation of the people in the Demon Continent who created this plague should not be too high.

Or rather, this is simply the people of the Demon Continent doing preliminary experiments, so there is no need to use much strong demonic energy.

Unexpectedly, there was a trace of encountering a demon just after leaving the Southern Wilderness, thinking about it, Luo Qing felt that there might be some kind of big conspiracy hidden in it, but what this conspiracy was, Luo Qing had no way of knowing.

At this time, the priority was to develop a drug to cure the plague, but now that the root cause of the disease has been found, it is much easier to develop a drug.

The treatment of ordinary plague is naturally easy to prepare, and a pair of clear plague and poison can be solved, but Luo Qing, the medicine to clear the demonic qi, is gone, and even if there is, it has to be considered whether the medicine is compatible with each other.

Therefore, what Luo Qing continues to continue now is to clear the medicinal materials of demonic qi, and Luo Qing also observed the medicinal fields in the Vulcan Cave Mansion, but he did not find suitable medicinal materials.

"Maybe you can contact the people of the Four Holy Lands, maybe they know what medicinal herbs can clear demonic energy. Luo Qing pondered for a moment and then muttered to himself.

Touching the purple jade plates, Luo Qing found that these jade cards originally had a contact function, and Luo Qing was a little happy, which saved him a lot of trouble.

Urging the four jade plates, he contacted someone in the blink of an eye, but it was a few ordinary disciples who came from the other side, and after understanding, Luo Qing knew that each holy place had its own intelligence pavilion.

After the exchange, each of them reported the situation to the top, and then finally came the people Luo Qing knew, the four elders of the Four Holy Lands, Luo Qing had all seen them.

"Seniors, it's finally time for you!" Luo Qing said with a smile.

"Stop, now we are not your predecessors, we are both Holy Land Elders, and we are now equals!"

"Yes, yes, we're the same now. The other three also said in unison.

"Okay, I don't have time to dwell on the issue of this generation with you, the main reason for finding four elders is that it is a bit timely, and the lives of fifteen million people are at stake. At this time, Luo Qing said a little eagerly.

Hearing this, all the elders gasped, and at this time, Xu Jiu asked, "The lives of fifteen million people are at stake, this is not a trivial matter, what situation have you encountered?"

"Didn't I go out to practice again, and came to Yongcheng, but there is a plague going on here, this plague is very domineering, even the cultivators have been recruited, and the doctors and alchemists in the city are helpless. Luo Qing thought to the four elders and explained.

"Such a domineering plague can actually infect all cultivators?" said Elder Cai Jiutian of Tianmu Mountain in some shock.

"Yes, below the sensing realm, as long as they have been in contact with the source of the disease, none of them have been spared, and they are all infected with the plague, and now the city lord's mansion has ordered the city to be closed more than a month ago in order to prevent the epidemic from spreading, and the patients in the city are waiting to die!" Luo Qing said.

"The lord of this city has given an order, and it is better to have a disaster in one city than to involve the next. Xu Jiu had some praise for this Yongcheng City Lord, and then said: "You are looking for us, is it because you have found a solution and need our help?"

"That's right, I found out that there was something strange about this plague, so I deliberately studied it, and it turned out to be a major discovery. Luo Qing said.

"What did you find?" Elder Si Guyuan, who had not spoken at this time, suddenly spoke.

Luo Qing replied: "I found out that this plague was thought to be made, and the plague was synthesized by people in a special way, because the plague contains a trace of demonic energy, although it is very subtle, but it was still discovered by me." ”

"Demonic energy?" the four said in unison.

"That's right, it's demonic qi, I have been in contact with it in Southern Regions City, so I can recognize it, it is demonic qi. Luo Qing said with great certainty.

"It seems that this plague in Yongcheng is a ghost behind the Demon Continent. Xu Jiu said after pondering.

"Whether it is the Demon Continent that is behind the ghost or not, we need to find a way to find out the intelligence pavilions of the Holy Lands. Luo Qing smiled and said, "My top priority now is to need medicinal materials to clear demonic qi, and the amount is not small, can the holy places provide it?"

"It's not difficult to get this medicinal herb to clear the demonic qi, and the demonic grass can be solved, but if the amount is too large, it will take some time to collect. Xu Jiu said.

"Then send it in batches, otherwise we will wait until we have collected all the pieces before sending them, and I'm afraid that many people will have died. Luo Qing said.

"That's all we can do for now, we're going to let people do it now. The four elders said in unison again, and after finishing speaking, they disconnected from each other.

Walking out of the secret room, Luo Qing was in a good mood, and at the same time asked Hongxia to send a message to the four regions, asking them to collect medicinal materials for the treatment of ordinary plagues and sending them, and at the same time, he also deliberately mentioned a few medicinal materials that neutralized the medicinal properties, and asked them to collect them together.

Everything was arranged, and then Luo Qing entered the next step.