Li Muran sighed lightly and said, "How can I not understand the truth that Senior Brother Mu said! If you are not a great cultivator in the late stage of your true body, it will always be difficult to deter the Quartet, and you will be a little less sure about dealing with that demon insect in the future." ”

"However, how difficult it is to advance to the late stage of the True Body! Even though there are some treasures to help you and the exercises are quite good, you are not too sure about the bottleneck of the late stage of the True Body. ”

Mu Li nodded: "After saying goodbye to Senior Brother Zhao two hundred years ago, it didn't take long for Senior Brother to be accepted as a personal disciple by his mentor, that is, the former Northern Emperor. The junior brother received the inheritance of the teacher, and in less than twenty years, he broke through the bottleneck and advanced to the early stage of the true body, and then before the immortal master sat down, the junior brother also luckily advanced to the middle stage of the true body. The junior brother also has a personal experience, if you want to advance to the late stage of the true body, it is really extremely difficult, there is no chance of going against the sky, I am afraid that there is no hope of even one percent!"

Speaking of this, Mu Li suddenly used the secret language sound transmission technique, and said mysteriously: "However, among the Northern Emperors of the past dynasties, there are many great monks in the late stage of the True Body, and the proportion of advanced Great Monks is much higher than that of ordinary middle True Body monks, can Senior Brother Zhao know the mystery?"

Li Muran was stunned when he heard this, and shook his head.

Mu Li said: "This is a secret in the immortal cultivation world of the Northern Han Kingdom, when the master told this secret to the junior brother, he claimed that this matter was only passed on by the mouth of the Northern Emperor in the past dynasties, in other words, except for the junior brother, in the world, I am afraid that there is no second person who knows this secret! Even Neizi, the junior brother has not yet told her, because her cultivation is still shallow, and the time is not yet ripe for her." ”

"In the eyes of Senior Brother, Senior Brother Zhao is not an outsider! Senior Brother Zhao was deeply appreciated by his mentor back then, if it weren't for Senior Brother Zhao's courtesy, maybe Senior Brother Zhao would be today's Northern Emperor! Therefore, Senior Brother is willing to share this secret with Senior Brother Zhao, because this secret is a plan that involves the later stage of advanced true body!"

"Something to do with the late stage of the advanced true body?" Li Muran's heart sank when he heard this, and he said, "Listen to me!"

Mu Li continued: "In the depths of the vast sea of ice, there is an extremely secret place, which is called the 'Xuanming Cave' by the teacher. According to the teacher, the environment of the Xuanming Cave is very special, there are extremely pure and yang treasures, and there are things that are extremely yin and cold, and the two restrain each other and achieve a delicate balance, so that the nearby yin and yang are blended, which is of great benefit to the monks to nourish the primordial spirit!"

"Can it nourish the Yuan Shen?" Li Muran was surprised and delighted.

The most important point in the late stage of advanced true body is whether the primordial spirit is strong enough. The so-called primordial spirit is the fusion of the monk's own soul with the essence of the three treasures of the essence and spirit that he has cultivated.

Although the Three Treasures of Essence Qi and God can be gradually enhanced through cultivation, the essence of the Spirit Qi and God that can be integrated into the Yuan Shen is very limited. As for the monk's own soul, it is even more difficult to improve through external means, so it is very difficult to strengthen the original spirit.

If you can cultivate in an environment that nourishes the Yuan Shen, the Yuan Shen will gradually become stronger, and it will be very advantageous when it hits the bottleneck of the late stage of the True Body in the future.

"That's good!" Mu Li said: "If you can cultivate in the Xuanying Cave and have a chance to hit the bottleneck in the late stage of the true body, you will have two percent more!"

"That's as much as two percent! This is a great improvement!" Li Muran was shocked: "If there is a panacea in the immortal cultivation world that can increase the chances of advancing to the late stage of the true body by two percent, it will definitely cause a robbery, and I don't know how many monks will fight and even lose their lives because of this!"

Even the well-known Feather Pill can only improve the chances of more than one percent.

Mu Li said: "It is precisely for this reason that the Northern Emperors of all dynasties did not dare to make this matter public. Looking at the whole world, my Northern Han Country is not the most powerful power, if the matter of the Xuanying Cave is leaked, it will definitely be taken away by other power, and the monks of the North Cold Country will not be able to use this treasure land at that time. Moreover, if all parties had a big battle near the Xuanming Cave, it would probably also destroy the special environment of the Xuanying Cave, so that the treasure land here would no longer exist! Throughout the ages, countless cultivation holy lands have been destroyed in the hands of the monks of the past dynasties!"

"The junior brother informed Senior Brother Zhao about the Xuanming Cave, firstly, he believed in the personality of Senior Brother Zhao, and I believe that Senior Brother Zhao would not tell him about this matter, let alone occupy this treasure land alone; secondly, it was also because Senior Brother Zhao was favored by his mentor back then, and he originally had the opportunity to become the Northern Emperor and was qualified to know about this matter, but it was only because Senior Brother Zhao was out of brotherly affection and courtesy to the junior brother that the junior brother would be allowed to ascend to the throne of the Northern Emperor today! The junior brother has already received great favors, how dare he monopolize the Xuanming Cave again, and let Senior Brother Zhao miss more opportunities! Therefore, the junior brother is willing to share this treasure with Senior Brother Zhao. ”

"Thank you, Senior Brother Mu!" Li Muran said with gratitude and excitement: "If the Xuanming Cave is really as mysterious as the Northern Emperor said, it is indeed extremely useful for Zaixia!

Mu Li smiled slightly and said, "The location of the Xuanming Cave, Senior Brother will tell Senior Brother Zhao." However, the junior brother still has some affairs to deal with, so he will not accompany Senior Brother Zhao to go together. In the future, after the junior and junior disciples are all ready, they will go to the Xuanming Cave to cultivate and impact the bottleneck of the late stage of the real body. ”

Mu Li informed Li Muran of the location of the Xuanming Cave, and the two talked about how to mobilize the power of the immortal cultivation world as much as possible, and tried their best to strategize.

Three days later, Li Muran, accompanied by Mu Li, went to pay homage in front of the spiritual seat of the former Northern Emperor, after all, this Northern Emperor was very blue-eyed to Li Muran back then, and he appreciated it greatly, which was quite a grace of knowledge. Li Muran, as a junior, should also worship his ancestors.

Then, Li Muran said goodbye to Mu Li and flew towards the vast sea of ice.

A few days later, Li Muran flew somewhere in the center of the ice sea. As far as the eye can see, there are countless large and small icebergs floating here, and some cold fish can occasionally be seen swimming in the sea, which is no different from the rest of the ice sea.

"Who would have thought that in the depths of this inaccessible and ordinary sea of ice, there would be a cultivation holy place like the 'Xuanying Cave'!" Li Muran muttered. If Mu Li hadn't told him the location of the Xuanming Cave, he was afraid that he would have flown here a hundred times, and he would not have found any clues.

Li Muran took out a large five-element escape talisman, pasted it on his chest, and activated this talisman, and his body immediately glowed with a faint layer of five-colored aura.

Under the shroud of this layer of five-colored aura, Li Muran sank into the sea of ice, and along the way, whether it was an iceberg, a biting cold sea, or a reef, he walked through it unhindered, and left no trace behind him.

Li Muran just kept exploring the depths of the ice sea, and the surroundings gradually became dark, and soon he reached the bottom of the sea.

Li Muran floated quietly at the bottom of the sea, motionless, closing his eyes and sensing the vitality of the surrounding heaven and earth.

In this sea of ice, most of the Heaven and Earth Yuan Qi is ice attribute Yuan Qi or water attribute Yuan Qi, and the other Yuan Qi is very weak, and if you want to sense the subtle fluctuations of Yuan Qi, there are high requirements for the cultivation of monks.

After a while, Li Muran seemed to sense something, suddenly opened his eyes, and said to himself: "Sure enough, there is a trace of special fire attribute vitality, although it is subtle, it is not weak. ”

Li Muran followed this subtle wisp of fire attribute vitality and slowly swam in the bottom of the sea, and not long after, he stopped somewhere.

"That wisp of fire attribute vitality escaped from here, and it seems that the location of the Xuanying Cave is under this seabed!"

Li Muran then sank into the reef at the bottom of the sea. After walking for more than ten miles in the hard submarine reef, the surroundings suddenly opened up, and under this reef, there was indeed a stone cave.

Because of the thick reef, the sea water cannot penetrate the cave, but the cave is still icy.

However, as Li Muran gradually went deeper in the stone cave, the surrounding temperature gradually increased. Not long after, Li Muran came to a stone hall.

This stone hall is very simple and rough to build, it is obviously a temporary cave house built by a little rest of the cave, the stone hall door is engraved with two ancient characters of "Xuan Ming", and I don't know how many years ago the handwriting left by the monks, probably this is the origin of the name of the Xuan Ming Cave.

There is only one stone platform, a stone bed, a stone futon, and a pair of stone tables and chairs in the stone hall, and the materials used are the ordinary reefs around.

In addition, there are two ancient wells on the left and one on the right of the stone hall, which are very conspicuous in this simple hall.

Li Muran's gaze swept in the stone hall, and he didn't find anything special, so his gaze naturally fell on the two ancient wells.

Li Muran first went to the ancient well on the left to explore, he walked to the mouth of the well, and looked intently at the bottom of the well.

This ancient well can be said to be bottomless, he swept it with his mind, and found that this well is a hundred zhang deep, and under a hundred zhang, there seems to be some calm well water. However, when Li Muran's divine thoughts were submerged in the well water and wanted to continue to investigate, the divine thoughts were gradually swallowed up by the well water, and disappeared completely!

Li Muran had already prepared, and took back most of his divine thoughts in time, and the loss was not big, but his face changed slightly.

"It's really very domineering!" Li Muran asked the demon soul for advice: "This well water is extremely cold, it should be the most yin and cold thing in the Xuanming Cave, but I can't see its origin below, I wonder if the predecessors can see the mystery?"

"Is it? You can't even see the calendar, this is very strange!" The demon soul flew out of Li Muran's sleeve in response, and transformed into a phantom of a demon cultivator.

The demon soul floated on this ancient well, and after concentrating for a while, his face changed, and he said: "Hey, the water of this ancient well is really extraordinary, and the power of yin and cold contained in it is extremely amazing, and it is indeed very strange!"

"The old man can't be prepared to judge the origin of the water of this ancient well for a while, if you want to investigate carefully, I'm afraid you will fly into the well!"

As he spoke, the demon flew under the well.

"Seniors, be careful!" Li Muran said, and flew into the ancient well with the demon soul.

"Hehe, with you here, is the old man still afraid of a lifeless ancient well!" the demon soul smiled disapprovingly.