Shen Liuyue went out from here in a daze that day, so she didn't explore what was on the way, and after Xuanyuan Zichen sent someone to fence this place, she was also guarded by people, and she didn't check it carefully.

So when she walked in here again, Shen Liuyue was in a bit of a trance, the marrow washing water in the cave still existed, and the medicinal herbs growing around her were very luxuriant, many of which could be used by Xuanyuan Zichen in treatment.

"I've always wanted to look for this place for the sake of these medicinal materials, some of which are time-sensitive, and if they are not used in time, even if they are preserved, it will be a waste. When it's time to detoxify you, you can come here to pick it up. ”

Xuanyuan Zichen clenched Shen Liuyue's hand and nodded solemnly: "I understand your intentions, this place is just a cave from the outside, but from the inside, it seems that there is no cave."

Moreover, there are traces of human excavation on the wall of this cave, which shows that this cave did not exist in congenital times, but was cast here by someone the day after tomorrow.

Drops of water seeped out from the walls of the cave and dripped into the marrow washing water, which lasted forever and never stayed, probably because of these medicinal herbs cultivated around the body, the area of the marrow washing water did not increase, and it was only a little bit from beginning to end.

It's been a few months since the last time I arrived, and it hasn't changed.

Several of the guards who followed were scattered, looking around for clues.

"Lord and Princess, there is a secret room here......" The voice coming from the right made Shen Liuyue and Xuanyuan Zichen hold their minds, glance at each other, and hurriedly walked over.

This secret room was covered with hanging vines, and if it wasn't for the guards who went to check it, I am afraid that it would not really be visible.

After making sure that there was no danger in the chamber, the guards withdrew.

Xuanyuan Zichen took the night pearl in the guard's hand and handed it to Shen Liuyue, so that she could check the movements around her.

This secret room was indeed artificially excavated, and there may be innate traces, but it cannot be seen, so it can only be speculated.

It seems like the Chamber of Secrets is the size of a room, but it always feels different.

"Yue'er, look here." Hearing Xuanyuan Zichen's voice, Shen Liuyue hurriedly raised her feet and walked over.

With the light radiating from the night pearl, I saw the rows of words on the wall, the handwriting was a little sloppy, and it seemed that it was left behind in a hurry.

"In the three hundred and twenty-fifth year of Mingyu, I came here with my senior brother, and then, my senior brother left because of something, and I am here to carefully study the Nirvana Dan ......"

Seeing this, Shen Liuyue's heart became more and more excited: "Ah Chen, it is the Nirvana Pill, the Nirvana Pill that can be brought back to life in the legend."

Naturally, we can know that the prescription of the Nirvana Pill was lost hundreds of years ago, and what is now circulating among the people is nothing more than a defective product.

In fact, the general meaning of the words on the wall is that hundreds of years ago, there was a master who retreated here under the leadership of his senior brother, and then began to study the Nirvana Pill.

"It's a little strange, looking at this handwriting, it was left behind in a hurry, but why is there nothing else wrong in this secret room?"

Shen Liuyue's doubts were properly answered by Xuanyuan Zichen: "It is possible that there are other clues that we have not found, and now that the four kingdoms are separated, Mingyu is already hundreds of years ago, and it is normal for such a long time to pass, and something happens in the middle, causing the clues to be lost."

Shen Liuyue bowed slightly, and reluctantly let go in her heart: "But no matter what, now we have a clue." Nirvana Pill, such a miraculous elixir, will definitely be able to cure you. ”

Such a miraculous thing as resurrection, Shen Liuyue didn't dare to count on it. But something as simple as cleaning up the residual poison, Nirvana Pill should be able to do.

Gently brushing the words written on the wall, Shen Liuyue's heart fluctuated at this time, and it was difficult to calm down.

I don't know where I touched the mechanism, and suddenly there was a sound, and a piece of the wall in the bottom right corner suddenly dented in.

The two looked over and found that it was full of medical books.

Shen Liuyue picked up a copy casually and flipped through it, and was immediately surprised: "I have never seen these medical books before, they may be the only ones that have been handed down, I didn't expect to see so many here."

"Don't look at it here, I'll ask people to move these things back, and you can take a look at them when you go home." Being able to find the medical book that made Shen Liuyue excited, Xuanyuan Zichen was also very happy.

"Okay, but I don't know how this mechanism was opened, we can take a closer look and say that we may not be able to find other mechanisms, there must be something else hidden here."

The things left over after hundreds of years will definitely give themselves a huge surprise, and the two of them didn't call anyone else in, so they slowly moved the book out first, but I don't know where they touched it again, the bookshelf turned around, and the wall on the left shook greatly, and a door that could allow one person to enter and exit appeared.

The voice was too loud, and the guards who were searching outside were a little worried: "Lord and Princess, is there something going on inside?"

Xuanyuan Zichen's voice raised slightly: "It's okay, you just keep watch outside, everything is normal inside." century

Nowadays, all the circumstances are not clear, and if you let people in, there will be a lot of people, and it will not be good if you say something.

Putting down the medical book first, the two entered the room, Xuanyuan Zichen in front and Shen Liuyue in the back.

Although this place has been closed for so long, because of the small holes in the wall, there is no smell of decay.

In the secret room, you don't need to use the night pearl to see clearly, Shen Liuyue looked up for the first time, and found a skeleton, it seemed that because a hundred years of history had passed, it was impossible to tell who this person was, and the clothes that the person was wearing turned to dust.

In the middle is a huge Dan furnace, and there are many bits and pieces next to it, which seem to be used to develop some kind of mysterious item.

"Is this dry bone the owner of the Chamber of Secrets?"

Xuanyuan Zichen observed it carefully and agreed with Shen Liuyue's words: "There is this possibility, but it seems that he should have had an accident while refining the items in the Dan Furnace, which led to his death."

Shen Liuyue was a little worried: "What he practiced, could it be the Nirvana Pill?"

After confirming that there was no danger in the secret room, Xuanyuan Zichen first appeased Shen Liuyue.

"Rest assured, there are also records in ancient books. The difficulty of the Nirvana Pill is that all its medicinal materials are extremely difficult to find, and its refining method has nothing distinct. ”

"In other words, as long as we can find enough medicinal materials, I can also practice the Nirvana Pill?"

Although Shen Liuyue's medical skills have not yet reached the peak, after so many years of careful practice, he can already be called a master in the medical field.

"Yes, theoretically it should be possible, we still need to look carefully to see if there are any cheats and the like that can help you practice the Nirvana Pill."

The items in the Dan furnace, the two of them did not touch them because they were not familiar with them, after all, most famous healers have their own temperaments.

The secrets of this cave, the secrets of this secret room, all show that this dry bone is not simple.

Neither of them would touch it until they were completely sure, in case anything happened.

In a crack in the wall where the dry bones leaned, Shen Liuyue found a letter.

If you are honest, after so many years, this letter should have turned to dust, but probably because of the special use of paper, this letter has been preserved intact.

"Ah Chen, come and take a look at this, maybe our doubts will be answered."

Shen Liuyue looked carefully on the side, and found another letter.

One letter was addressed to the person who was called Senior Brother, while the other letter was an essay from the owner of the dry bones.

It turned out that this dry bone brother was the national teacher of Mingyu back then, a monk who was closest to God in legend, and his name was Wuself.

As for the owner of this secret room, he is ruthless, and he originally received an order from the lord of Mingyu to develop a Nirvana Pill that can bring the dead back to life, in addition to this order, there is also a very important order, that is, it is necessary to develop an extremely powerful weapon of mass destruction.

At that time, the Mingyu Kingdom had fallen into a situation of internal and external troubles, and in addition to powerful weapons and a large number of soldiers who could save the country, it seemed that they could only watch the country enter decay and decline.

Therefore, selflessness and ruthlessness carried the most ardent hope of the lord of the country and came to this place, because Wuself could not rest assured about the situation in the capital, so he let the junior brother ruthlessly stay here and carry out research.

In this cave, he ruthlessly used the things he brought to open up, and with the initial situation of the cave, he planted medicinal herbs, refined marrow washing water, wrote medical books, and summarized what he had learned all his life, so as to restore the Nirvana Pill that had been somewhat lost in ancient times.

The next most important thing is to develop this large-scale weapon of destruction, made of saltpeter, sulfur and other materials, although it is only a powdery thing, but once it comes into contact with an open flame, it will explode.

In the midst of ruthless speculation, if these powders were packed with iron tools and made a primer, the explosion might have been greater after ignition, but because of the mistake of the mechanism, he was trapped here, and he could only write these two letters because he couldn't wait for the rescue of his senior brother.

Looking forward to the day when I am gone. When the senior brother came, he could also see that bringing these back in this way could save the Mingyu Kingdom.

The recipes and refining characteristics of Nirvana Dan were written down, and he also wrote down the problems and solutions encountered in the refining process very carefully, hoping that future generations would be able to use them in the process of making.

At the end, he wrote his own summary, maybe because of the loss of some legendary materials, Nirvana Pill cannot bring people back to life like in the legend, but the huge role that Nirvana Dan has cannot be denied.

As for what the effect is, because he is dying, and there is not so much time for experimentation, so he can only leave it to future generations to solve.