Zhang Yuan directly teleported to a place that he thought might become Ren Jianguo's detention, but when Zhang Yuan's figure just appeared, a Lingbao flying sword flew towards Zhang Yuan, because he didn't expect a sudden attack, so when the flying sword reached his body, Zhang Yuan didn't react, so just for this moment, the flying sword pierced into Zhang Yuan's shoulder.

Fortunately, the cultivator who used the flying sword was only a cultivator of the True Immortal Realm, so the flying sword only pierced Zhang Yuan's shoulder for two centimeters before it was squeezed by Zhang Yuan's body, and before he had time to see who he was injured by mistake, Zhang Yuan directly took the flying sword off his shoulder, threw it to the side, and then dodged into the room next to him.

After entering the room, Zhang Yuan was taken aback by the scene in front of him, Zhang Yuan's previous guess was right, in this building, it was really a place where prisoners were held, so after entering the room, Zhang Yuan saw dozens of ordinary cultivators who were locked with a strange metal chain, and looked at the infusion tubes inserted in the cultivators' bodies, which made Zhang Yuan feel as if he had returned to that war-torn era, these cultivators were caught by the professor's people to study some experiments such as bacteria.

These cultivators are all in a coma, so none of the cultivators will struggle because of some strange equipment, Zhang Yuan is not particularly clear about these things here, the only thing he knows is that a green thing that may be like a nutrient solution is injected into the bodies of these cultivators, maintaining their lives, and on the other side, their blood is constantly pumped out and sent somewhere underground.

This kind of living experiment made Zhang Yuan very angry, so the treasure money in his hand flung forward, and a beautiful arc was crossed in the air, and in an instant, all the infusion tubes were cut off by Zhang Yuan, of course, what Zhang Yuan cut was only those infusion tubes that kept drawing blood, as for the green liquid, Zhang Yuan did not dare to cut it directly, because Zhang Yuan could not determine the consequences after the cutoff, if these cultivators completely relied on these green liquids to maintain their lives, I am afraid that if they cut off the infusion tubes, it would be equivalent to directly burying the lives of these cultivators。

However, what made Zhang Yuan regret a little was that he just cut off the infusion tube where these people's blood was drawn, which directly led to the direct death of two of them, and it seems that this phenomenon is not over, the death is still continuing, this time it really made Zhang Yuan regret a little, Zhang Yuan really didn't expect that stopping the blood drawing would make these people die, Zhang Yuan wanted to save them, but inexplicably harmed them.

It was too late to continue regretting, Zhang Yuan immediately came to a cultivator who had not died immediately, and wanted to check specifically why he died, but Zhang Yuan had not yet found out clearly, and this person also died directly in an instant, so Zhang Yuan could only immediately transfer to the side of another person and continue to check the situation in his body.

Finally, after the death of thirteen cultivators in a row, Zhang Yuan finally found the cause of the death of these people, it turned out that the culprit of all was the green liquid infusion tube that Zhang Yuan had never cut, this green liquid can not only maintain the life of these people, but also promote the hematopoietic function in the practitioner's body, so that although these cultivators are constantly being drained of blood, but they will always produce fresh blood, at this moment after Zhang Yuan cut off the infusion tube that extracts blood, the bone marrow in the practitioner's body is still constantly making fresh blood, and the blood is produced, but there is no way to be drained, so it caused the blood pressure in the bodies of these cultivators to rise, and finally the blood vessels burst directly and died.

After discovering such a thing, Zhang Yuan really couldn't cry or laugh, he really didn't expect that his good intentions would turn out to be bad, so after knowing the truth of the matter at this moment, Luobao Money came out of his hand again, and instantly cut off the infusion tube that transported the green liquid, but after all, the delay was a little too long, so in the end, Zhang Yuan only saved three cultivators, and these three cultivators were all relatively weak, perhaps it was because of their weakness that they really saved their lives.

Of course, although he had succeeded in saving the lives of these three cultivators, perhaps because there was a sleeping drug in the green liquid, Zhang Yuan would not be able to successfully wake them up for a while, and there was a fight outside at the moment, so it was better to let them continue to stay here, and after properly arranging a few people, Zhang Yuan left this place and teleported towards the next place where the prisoner might be held.

Not every search was very smooth, Zhang Yuan searched for a few places, and only found four places where people were imprisoned, but there was no Ren Jianguo at all, all of them were those who were arrested by the people of the previous professor in the chaotic capital, with the first experience, Zhang Yuan also successfully rescued the cultivators in the remaining places, and similarly, it was also a simple arrangement in the place where they were originally held, and Zhang Yuan continued to walk towards the next place.

On the road of finding Ren Jianguo, Zhang Yuan was also worried little by little, after all, Ren Jianguo's experience was completely different from these people, Ren Jianguo was a professor who might have been caught by the other party before moving here, so whether Ren Jianguo was here or not, Zhang Yuan was not very sure, on the other hand, if Ren Jianguo was indeed here, and it was also the same encounter with these cultivators he saved at the moment, Zhang Yuan also had no way to determine whether it would leave him with any kind of sequelae after being injected with those green liquids, after all, in order to save time, Zhang Yuan didn't wait for those people to wake up, although after being rescued by Zhang Yuan, their vital signs stabilized one by one, but whether they could successfully wake up, Zhang Yuan was really not so sure, so after searching for a long time, Zhang Yuan's worries became more and more serious.

The sky has begun to gradually brighten, Zhang Yuan's heart is also becoming more and more anxious, after all, he has searched most of the palace, but still has not found Ren Jianguo's whereabouts, at the same time, Zhang Yuan's heart has a deep curiosity about the purpose of the professor's collection of these blood, to know that he has found more than a dozen places where cultivators are detained along the way, without exception, all the cultivators are being drained of blood, if calculated according to the number, the professor will get several tons of blood every hour, and where the blood goes, Zhang Yuan still has no clueIt's just that under the ground of each room where the cultivators are held, there are some official channels that directly carry the blood from the cultivator's body to the ground.

Finally, after rescuing the cultivators in a room again, Zhang Yuan couldn't help his curiosity and began to search on the ground, it stands to reason that these official roads should not exist at the beginning, after all, when this place was just built, even the ruling class of the Celestial Empire did not exist, and the Celestial Empire only managed to build the Celestial Empire Palace of this scale after its successful rise, and the surrounding buildings were included in his own pocket, and the Celestial Empire Palace of this scale was built at the beginning, and the professor could not have known that he would be ready to develop his base here at the beginning, and these people who taught him only came here yesterday, How could it be possible to successfully build this place into its current appearance in just one day, so Zhang Yuan was very suspicious that these things were completely assembled directly.

After carefully inspecting every corner, Zhang Yuan finally discovered the secret here, and as Zhang Yuan expected, the reason why this place became like this is really completely assembled, in fact, the really useful place is a piece in the center of the room, as for the surrounding ground, all of them are temporarily paved with stones of the same color as the instrument in the center.

Zhang Yuan lifted a few of the stones, and slowly, the instrument in the center slowly revealed its original appearance.

Looking at this thing in front of him, Zhang Yuan felt that it was a coffin, because although this looked like a stone, Zhang Yuan quickly discovered that this was actually a coffin made of metal, and it was very easy to place this coffin, only need to smash a deep pit on the original ground, and then lay it out with stones of the same color, and then it would be completely impossible to see the secret here.

All the cultivators in the room have been rescued by Zhang Yuan, so the blood will no longer continue to be sent to this metal coffin, but what makes Zhang Yuan unclear is where the blood that entered the coffin before has gone, after all, these imprisoned cultivators have been transporting the coffin inward, and according to the volume of the coffin, it is absolutely impossible to hold such a large amount of blood, so in this coffin, there must be some kind of creature that is constantly devouring the blood flowing into the coffin.

In order to relieve his curiosity, Zhang Yuan slowly approached the coffin that was placed under the ground, and after walking around the coffin a few times, Zhang Yuan found that the coffin seemed to have no opening at all, and if he wanted to open it, he was afraid that he would need to forcibly break it.

Turning his head to look at the cultivators who still hadn't woken up, Zhang Yuan could only move them to the other side of the room one by one again, just in case there were really any living creatures inside, so as to avoid harming them when they came out of them.

After all this, Zhang Yuan also chose a corner place, and began to continuously input the true yuan into the treasure money in his hand, preparing to forcibly open the metal coffin.