Li Muran's heart moved and said, "Didn't you mention that the Nanyang realm is quite special, and the interface power between here and the demon world is relatively weak. The seniors and other demon cultivators entered this world from here. Could it be that these demon cultivators want to break the interface power here?"

"How is this possible!" The Demon Soul shook his head repeatedly, "The power of the interface is so powerful that even if we encounter a slightly weaker node and opportunity, it is not something that the cultivators in the lower realm can break. Back then, we came from the lower realm of the demon world, used powerful formations, and had extremely high cultivation levels to join forces. Only then could we break a small gap in the barrier, allowing a limited number of demon cultivators to enter the lower realm. Therefore, it is impossible for the cultivators in the lower realm to break the barrier from here, and I don't know why the Nanyang realm was sealed."

Li Muran pondered for a moment when he heard this. He looked at the endless sea of ​​volcanoes and fires around him, frowned and said, "Even seniors have no clues. This matter is indeed very strange! However, the Nanyang realm is so big, it may not be easy to track down the whereabouts of those demon cultivators!"

The demon soul suddenly moved his heart and said, "I remembered something. When we came to this Nanyang realm from the Demon Realm from the Demon Realm, we were bound by the power of the lower realm and our strength was sealed. We had to adapt for a long time before we could gradually recover. Therefore, we were stationed near the Nanyang realm where there was a lot of demonic energy. We also built a palace called the Heavenly Demon Palace. Some of the resource treasures we brought from the Demon Realm were also hidden there. Could the elders of the five great Demon Sects know about this and went to the Heavenly Demon Palace to search for treasures?"

"After many years, those treasures may have been no longer in their original place! These demon cultivators made such a big noise just to hunt for treasures?" Li Muran was a little unbelievable: "Then what are they going to refine the Blood Wheel Pill?"

"Maybe it is to understand some special ban. The Blood Wheel Pill contains a trace of the power of the law of reincarnation, and it has endless magical uses. I only heard about this pill from a blood demon cultivator back then, but I was not very clear." The tone of the Demon Soul was not very sure, but just gave some speculations.

Li Muran nodded and said, "Since you are giving up any traces, why not go to the Heavenly Demon Palace to explore first. There are many demon cultivators here, maybe not all for the same purpose, maybe there are single demon cultivators looking for treasures everywhere. If you can meet one or two demon cultivators who are single, as long as they are not in the late stage of the real body, you may be forced to find out the true intentions of the demon cultivators from them."

Li Muran put away the Xuanguang Sword, followed the instructions of the Demon Soul and flew all the way to the Demon Palace.

Along the way, there was a sea of ​​fire everywhere, and the flames were surging. Except for some fire-attribute monsters that jumped out from time to time, they were basically dead.

Not long after, Li Muran saw a huge mountain shadow in the distance, almost blocking half of the sky.

"That's where the Heavenly Demon Palace is!" The demon soul pointed at Shanying and said.

After flying closer, Li Muran saw the huge flaming mountain that the demon soul pointed to. This mountain was covered by a layer of flames, and the mountain was dark red. The rocks on the mountain were burned red, like semi-melt soldering iron.

Li Muran narrowed his eyes slightly and vaguely saw some stone halls and other buildings on the giant mountain.

While flying towards the Flame Mountain, Li Muran released his divine thoughts and explored into the interior of the mountain.

Unexpectedly, the layer of flames that enveloped this mountain was difficult to even pass through. If the divine thoughts were to forcefully explore it, it would be extremely detrimental!

Li Muran frowned slightly and put away his spiritual thoughts.

"There seems to be a restriction here to isolate it!" Li Muran murmured. With his powerful divine consciousness, how could these flames stop it? It is probably because there are strong restrictions hidden in it.

"Is that right?" The Demon Soul was stunned: "There were indeed some formation restrictions here back then, but after so many years, is it still effective?"

Li Muran continued to fly towards the Flame Mountain, intending to land halfway up the mountain. However, when he was still dozens of miles away from the mountain, he suddenly felt a strong pressure coming from the void around him, turning into a huge force and pressing hard on him.

Li Muran, who was originally flying in the air, fell suddenly by the pressure of this huge force! The flight technique was directly interrupted.

"What a strong air ban!" Li Muran's face changed. He hurriedly used his martial arts and poured his divine power into his body. A layer of Qilin golden light appeared on his body.

"Boom!" Li Muran then landed heavily at the foot of the Flame Mountain, shattering a huge rock that had settled down to pieces.

"Fortunately, I have achieved success in body refining! Otherwise, this fall might lead to injury!" Li Muran's face changed slightly.

Li Muran asked: "The prohibition on air here is so powerful that even our mid-stage cultivators, such as us, cannot use the flying technique to climb this mountain directly! Is this a clever method left by the seniors and other demon cultivators back then?"

The demon soul shook his head with a serious expression and said, "No, although the Heavenly Demon Palace had a ban, it was just a very ordinary isolation defense formation, and there was no ban on air! Moreover, this ban on air is so powerful that it is definitely not something that ordinary monks can arrange!"

"It seems that this huge Heavenly Demon Palace must have another mystery!" Li Muran was shocked. He looked up and looked up from the foot of the mountain. He felt that the mountain covered the sky and the sun was extremely tall.

"Even the ban on air here is so powerful. If you break in rashly, you may have other dangers!" Li Muran has always been cautious and tried to avoid risks.

There are crises everywhere in the world of immortal cultivation. If it weren’t for this carefulness, Li Muran would probably not have lived today.

Li Muran was hesitating whether to enter the mountain to investigate, but suddenly a loud bang came from above, followed by a wave of land.

Li Muran looked in the sound and saw a huge magic light rising from the hillside, but there was nothing else to see.

"Someone is in the Demon Palace!" Li Muran was shocked.

This movement was obviously caused by man, but it was still the magic light, most of which were the demon cultivators of the five major demon sects who entered here!

"I really let the seniors say that those demon cultivators are indeed in this Demon Palace!" Li Muran said in surprise.

He immediately used his hidden means, his body was covered by a layer of black light, and then disappeared here.

Afterwards, Li Muran quietly stepped into the Flame Mountain.

Here, the prohibition on air ban is strong, so you can only step up to the mountain step by step. At the foot of the mountain, there is a stone staircase that is not too wide, winding upwards, leading to the depths of the Heavenly Demon Palace. From a distance, there is no end.

After Li Muran stepped on the stone stairs, he released his divine thoughts, but found that his divine thoughts were still difficult to reach, so he could only detect the environment within ten miles.

"It's probably the influence of the forbidden air ban." Li Muran thought to himself that this ban is very powerful and cannot be used at all. At most, it can only take dozens of feet to the air in a short period of time, and then it will fall. Even the divine consciousness is subject to some restrictions. However, this ban does not affect Li Muran's magic power, and other magical powers should be able to be used without any obstacles.

After Li Muran walked out the stone staircase for several miles, he saw a dilapidated mountain gate.

There are still a lot of gravel scattered near the mountain gate. However, these gravels are completely different from the surrounding fiery red rocks. They emit a faint layer of spiritual light, which is translucent. Some gravels have some broken rune marks on the surface.

"Psychological Jade!" Li Muran was stunned. He recognized the origin of these gravels at a glance.

He reached out to grab it, sucked a few pieces of gravel into his hands, and carefully checked the remaining runes on it.

"These should be all ancient stone talismans refined with psychic jade! Judging from the damaged traces, they were obviously destroyed in recent days!" Li Muran murmured.

Judging from this point of view, the demon cultivators of the five major demon sects were likely to have arrived here not long ago and destroyed the ancient stone talisman guarding the mountain gate.

Li Muran put all the gravels in a jade box.

The Demon Soul said in confusion: "These stone talismans have been completely destroyed and cannot be repaired at all. What do you want these debris to do?"

Li Muran smiled slightly: "Although the stone talisman is broken, these materials are all good psychic jades. It is difficult to find this mineral now. As long as some high-quality psychic jade is refined from the stone chips, you will have the opportunity to refine new psychic jades."

After Li Muran put away the gravel, he reached out and pushed open the stone door in front of him.

Unexpectedly, the stone gate did not move at all.

Li Muran was stunned, secretly wielded a divine power, and pushed his palms hard. The stone gate shook slightly this time, but it was still not pushed open.

Li Muran couldn't help but be shocked. He had achieved success in his body training. This push actually contained extremely strong force, but he could not even push the seemingly ordinary stone door.

"This is not an ordinary stone gate!" The demon soul suddenly said: "If I read it correctly, this should be a special stone called Tiangang Rock. This stone is very hard, not afraid of any magic attacks, and is extremely heavy. This mountain gate is also forbidden to bless, so it is not surprising that you can't push it."

"Those demon cultivators can actually break a hole several feet wide in the stone gate refined by Tiangang Rock. There are some tricks!" The demon soul pointed to a big hole in the stone gate and said.

"It seems that those demon cultivators enter the mountain gate through this place!" Li Muran said in his heart. He was unwilling to spend more energy, so he simply used his skills, shrank, and penetrated into the stone gate through the hole.

After passing the stone gate, the stone hall hidden in the flames suddenly appeared in front of Li Muran.

"What a big building!" Li Muran said in his mind that the Heavenly Demon Palace was built against the mountain and stretched endlessly. Even if he knew that the demon cultivators were here, he would probably have to find them for a long time.

Li Muran was not in a hurry. He continued to use his hidden magic power and slowly leaned forward.

He walked into a stone hall and saw that the stone tables and chairs in the stone hall were overturned to the ground, and the gravel was scattered everywhere. Judging from the various traces, it was obvious that someone had just looked through.

"It seems that those demon cultivators have carefully investigated this place, and there should be no treasure left." Li Muran walked straight through the stone hall and explored deeper.
Chapter completed!