After listening to the explanation of the Seven Demon Lords, Duan Chen couldn't help but ask, "Then if you want to repair the Mountains and Rivers Ding, how many Five Elements Essence will be needed?"

"First of all, you have to repair the three cracks on the inner wall of the Shanhe Ding, only by repairing these three cracks first, and when you refine the nine-fold weapon pattern of the Shanhe Ding in the future, can you maximize the power of this Ding. ”

The Seven Demon Monarch said: "This is also the most promising thing for you to do at the moment, you only need to refine the essence of the five elements equivalent to refining more than a dozen Cave Heaven Spirit Treasures, and you can completely repair the three cracks on the inner wall of the Mountains and Rivers." ”

Duan Chen was taken aback.

Just repairing the three cracks in the inner wall would require the essence of the Five Elements equivalent to refining more than a dozen Cave Heaven Spirit Treasures?

"Don't think it's a lot, even if the mountains and rivers are damaged, the grade is equivalent to the best cave heavenly spirit treasure. ”

The Seven Demon Lords said lightly: "Repairing a top-grade Cave Heaven Spirit Treasure so that its power can be fully exerted, only the Five Elements Essence equivalent to refining a dozen Cave Heaven Spirit Treasures is required, and the price is already very low." ”

Duan Chen nodded.

He knew that what the Seven Demon Lords said was reasonable, but if he only repaired the three cracks on the inner wall of the Mountains and Rivers, he would need to refine the essence of the Five Elements equivalent to refining more than a dozen Cave Heaven Spirit Treasures.

So how many Five Elements Essence should be needed to completely restore this treasure to the level of a superb immortal weapon?

Thinking of this, Duan Chen couldn't help but ask, "Then how many Five Elements Essence is needed to restore this treasure of Mountains and Rivers to the level of a supreme immortal weapon?"

"Do you still want to restore this treasure to the level of a top-grade immortal weapon?" The Seven Deaths Demon Lord couldn't help but roll his eyes: "It's not possible, it's not enough for you to quench all the Cave Heaven Spirit Treasures in your Donghua Realm and all the Five Elements Essence contained in all the lower-grade Immortal Weapons." ”

Duan Chen actually guessed that it would be difficult to restore the Shanhe Ding to the ultimate immortal weapon, so he was not surprised to hear what the Seven Dead Demon Monarch said.

After all, it was a top-grade immortal weapon, even if you look at the immortal realm, only a very small number of immortal monarchs are qualified to have it, and in order to completely repair the treasure of this level, the essence of the five elements required is too huge, and it is not something that one realm can supply at all.

"Looks like I'm overthinking. Duan Chen shook his head.

Immediately, his demon path deity was out of the mountain and river tripod, and the immortal path deity continued to stay in the mountain and river ding cave heaven world to consolidate his cultivation, and by the way, he asked the Seven Demon Lords how to manipulate the mountain and river tripod, the cave heaven spirit treasure.

After the Demon Dao Deity left the Shanhe Ding Cave Heaven World, he retreated and cultivated in the meditation room for more than half a month, and after barely consolidating his cultivation, he rushed straight to the World Hall of the Demon Doctor Temple Cave Heaven World.

Shuttling through the void in the cave world, Duan Chen's Demon Dao deity teleported a few times to the main hall where the old hall master lived on weekdays, and there were some servants and guards guarding there in front of the main hall, including many god-transforming monks.

"What a powerful demon. ”

"This magic power ......"

The two strongest Demon Emperors in the guards were terrified, and the minions were even more trembling.

But they didn't know that this demonic power was already the result of Duan Chen's Demon Dao deity's convergence, if Duan Chen's Demon Dao deity released his own breath with all his might, then the demonic power would be terrifying, and I am afraid that the monks below the god would not be able to continue to stand.

"Come in. "Without waiting for Duan Chen's Demon Dao deity to ask someone to pass it on, the voice of the old hall master came out from the main hall.

Duan Chen immediately walked into the hall, and soon walked to the depths of the main hall, and saw the old hall owner who was described as withered, as if he might sit down at any time.

Before, Duan Chen didn't understand that even if the old pavilion master couldn't survive the Ninth Great Heavenly Tribulation, he shouldn't have aged like this, but since he talked to the Seven Demon Lords, he already knew the answer in his heart.

If he wasn't mistaken, the old hall master's Ninth Great Heavenly Tribulation would have already come.

It's just that the old pavilion owner failed to cross the tribulation, although he failed, but the old pavilion owner did not fall on the spot in the ninth great tribulation, but survived with difficulty, but time was running out.

Thinking of this, Duan Chen couldn't help but feel a pain in his heart, and said in his mouth: "Master, the disciple is fortunate not to be dishonored, and he has already broken through to the realm of refining the void." ”

With a smile on his face, the old hall owner looked at Duan Chen and examined it for a long time.

After a while, I only heard the old hall master's voice hoarse and asked, "The early stage of refining the void or the middle stage of refining the void?"

"The disciple doesn't dare to deceive the master, it's the early stage of refining the virtual realm. Duan Chen said.

"Very good, the aura of the early stage of refining the virtual realm is comparable to the middle stage of the refining virtual realm, and you have done even better than I expected. The old hall owner nodded with satisfaction.

He was very satisfied, happy and relieved, he was able to see Duan Chen break through to the Refining Void Realm at the last moment of his life, and his aura was still so strong, he felt that he had no regrets in this life.

"There are some secrets that now is time to tell you. The old hall owner got up with difficulty and said, "Come with me." ”

"Yes. Duan Chen hurriedly stepped forward and helped the old hall master.

A moment later, in a large hall full of magic crystal statues, the old hall master slowly walked in with Duan Chen's support.

Looking at the magic crystal statues of the previous hall masters placed in the main hall, the old hall master couldn't help but sigh and asked, "Apprentice, do you know how many generations my Demon Doctor Pavilion has been passed down since its establishment?"

"Seventeen generations, if you count the disciples, it is eighteen generations. Duan Chenlian replied respectfully.

Since the establishment of the Demon Doctor Pavilion, a total of seventeen generations of hall owners have been born, and if Duan Chen himself is counted, it is eighteen generations.

However, because the old hall owner is still alive, he, the eighteenth generation hall owner, is only the nominal owner of the Demon Doctor Hall.

At present, most of the things in the museum are still decided by the old hall owner, and Duan Chen is still in the stage of learning from the side.

After all, if you want to be in charge of a big force, it's not just a matter of passing on a position, how to handle all the big and small affairs in the museum is the top priority.

"Yes, it's the eighteenth generation. The old pavilion master nodded, and then asked again: "Then do you know that among the past generations of the hall masters of my Demon Medicine Pavilion, there are a total of how many hall masters have cultivated to the Mahayana stage?"

"I don't know. Duan Chen shook his head and said.

He only knew that there were a total of eighteen hall masters in the Demon Doctor Pavilion inheritance, and as for what level each hall master had finally cultivated, he really didn't know very well.

"Then I'll start talking to you from here. The old hall master sighed and said: "My Demon Doctor Pavilion has been inherited so far, in addition to the first generation of Pavilion Master Renwang Holy Ancestor and the third generation of Pavilion Masters who have ascended to the Immortal Realm, there are a total of five people who have cultivated to the Mahayana stage. ”

"Five?" Duan Chen couldn't help but be taken aback.

If you count the first and third generations of pavilion masters who have soared, then there are a total of seven pavilion masters in the history of the Demon Doctor Pavilion who have broken through to the Mahayana period alone.

This number is already a lot for a big force, even if it is the top ten immortal sects of the human race in the world, it may not be able to cultivate so many Mahayana monks.

I only listened to the old hall master say to himself: "First of all, these five hall masters are the second generation, the fourth generation, the fifth generation, the seventh generation and the eighth generation, among which the second and fourth generations are very high in medical skills, but the cultivation qualifications are very average, and it is completely the first and third generations who have cultivated hard before the ascension, and they have been able to break through to the Mahayana period." ”

"The second is the five generations, the five generations are similar to the qualifications of the teacher, but before the ancient times, the demonic qi was full, and our demon medicine hall was still very powerful at that time, so the five generations finally cultivated to the Mahayana period. ”

The old pavilion master said again: "If the fifth generation pavilion master lives in our era, with his qualifications, whether he can cultivate to the merger period is still two words. ”

"Above the five generations, there are eight generations, and the qualifications of the eight generations are higher than those of the five generations, and their talents are enough to rank five among the previous masters of my Demon Doctor Pavilion. The old hall owner said: "He almost succeeded in the tribulation and ascended to the immortal realm, but unfortunately he fell short in the end." ”

"As for the seven generations of pavilion masters, the reason why I put him at the end is because among the previous generations of pavilion masters, his qualifications and talents are only the first generation of pavilion masters, and even the three generations of pavilion masters who have ascended to the immortal realm are far inferior to him. ”

I saw that the old hall owner said with a complicated expression: "Even back then, everyone thought that as long as he continued to cultivate step by step, he would definitely become the third immortal in the history of my Demon Doctor Pavilion, and finally attain the Great Dao and soar to the immortal realm, but it's a pity that ......"

As soon as Duan Chen heard the old pavilion master say that it was a pity, he immediately realized that there was something else hidden about the matter of the seventh generation pavilion master.

And this secret is probably not ordinary, and it is very likely that it involves some secrets of the Demon Doctor Pavilion.

"Do you know why there are no magic crystal statues of the seven generations of hall masters among the magic crystal statues of the past pavilion masters placed in this hall?" Just as the thought flashed in Duan Chen's mind, the old hall master suddenly asked.

"I don't know. Duan Chen shook his head and said.

Although when he first saw these magic crystal statues, he had already found that there were no magic crystal statues of the seventh generation hall master, but why there were none, he didn't know very well.

When the old pavilion master heard this, a trace of memory suddenly appeared in his eyes, and he said softly: "Since this is the case, then I will start from the time when the seventh generation of pavilion masters was born." ”

After a slight pause, he continued: "The seventh generation of pavilion masters was born in ancient times, originally the crown prince of a secular dynasty, and later the sixth generation of pavilion masters gave up the position of prince and followed the six generations of pavilion masters to practice, and this practice has been out of control since then. ”

Speaking of this, the old pavilion master couldn't help but look at Duan Chen and asked, "Apprentice, do you guess how long it took for these seven generations of pavilion masters to cultivate step by step from the mundane to the realm of refining the void?"

"Less than a thousand years?" Duan Chen said with some uncertainty.

After all, according to the old pavilion master, the talent of the seven generations of pavilion masters ranked second among the previous pavilion masters, second only to the first generation of pavilion masters, Renwang Holy Ancestor, so it is estimated that it will not take a thousand years to cultivate to the realm of refining the void.

After hearing this, the old pavilion master shook his head and said: "Less than a thousand years, that is the level of ordinary demons, and the seventh generation of pavilion masters only took three hundred years to cultivate from the mundane to the realm of refinement. ”

"Three hundred years?" Duan Chen was shocked when he heard this, the cultivation speed of these seven generations of pavilion masters was too terrifying.

He himself cultivated from the mundane to the Void Realm, if you don't count the time acceleration in the Time and Space Altar and the Time and Space Demon Lotus, it would have taken more than eight hundred years, and if you count the time to accelerate your cultivation, the cultivation years would even exceed a thousand years.

But the seven generations of pavilion owners only took three hundred years?

It is no wonder that his talent was praised by the old hall owner as second only to the first generation of hall owners in the past generations, and was even recognized as an existence destined to soar into an immortal.