Li Muran asked those werewolves, "There is a Dark Heaven Son in your tribe, who was a sixth-order werewolf three hundred years ago, can you recognize it?"

All the werewolves shook their heads in confusion, and the werewolf led by them said: "The sixth-order wolf life is generally only about three hundred years, if the clansmen mentioned by the predecessors have not advanced smoothly, then most likely they have already fallen by this time. ”

Li Muran nodded, and asked again: "I still remember that he has a sister named Princess Xiyue, have you ever heard of it?"

The werewolf at the head was shocked and said: "Back to the seniors, the current patriarch of this tribe is the one who is secretive and cherishes the moon, do the seniors recognize the patriarch of this tribe?"

"It turns out that she has become the patriarch!" Li Muran smiled slightly.

Although Li Muran and this Princess Xiyue are not very familiar, they are also the same holy sons, and they have met several times. Princess Xiyue's younger brother Dark Sky has a very good relationship with Li Muran, and he is one of his few friends in the werewolf clan.

"Since the seniors know the patriarch, why don't you go to your own clan to talk about it?"

"No need!" Li Muran said with a smile: "When you return to the Cherish Moon Daoist, I said that for a while, a Daoist friend from the Tiangong tribe will visit her." ”

"Yes!" the werewolf respectfully commanded.

Li Muran asked the location of this place again, and then flew to the west.

In the blink of an eye, he disappeared into the sky again.

The rest of the werewolves looked at each other.

"What do you mean by this senior's words? Could it be that he is from the Tiangong tribe?" said a werewolf.

"Tiangong Tribe? Isn't that a small tribe that is attached to my Dark Moon Tribe? There are still such big people?! Seeing that he is already completely humanoid, and there is not the slightest werewolf blood aura emanating from it, is it an ancestor-level monk who has completely transformed into a human form?"

The werewolves whispered, and the werewolf at the head said: "Don't say more! This kind of high-ranking thing, how can we and others discuss and comment at will, in case some rumors reach the ears of the masters, as long as we offend the slightest bit, our lives will be guaranteed! Today's matter, except for reporting to the patriarch, we must not mention a word to outsiders, and those who violate the order will be dealt with by the clan rules, you should remember!"

The werewolves immediately did not dare to say more, and dispersed to prepare for mining.

......

Li Muran flew straight towards the West Wilderness City to the west of the Ancient Land, and in the north of the West Wilderness City, there was a Ten Thousand Demon Valley. And in the depths of the Ten Thousand Demon Valley, it is the place where the secret hiding place of the Night Clan, the City of the Earth, is located!

Now that he has come to the Ancient Land, Li Muran naturally wants to go to the Dark Night Clan and teach the complete Night Secret Technique to the Night Clan, which is also his promise to Ye Tian back then. There is also the Night Order, that is, the Poor Strange Order, which was also given to him by Ye Tian, and it is a token of the Night Clan.

Li Muran knew the general location of the geocentric city, so he used a few instantaneous talismans from time to time, and soon rushed to the Valley of Ten Thousand Demons.

Although he hadn't been here for more than three hundred years, the high-level immortal cultivators had never forgotten it, and Li Muran was still quite familiar with the terrain here.

The demon beasts in the Valley of Ten Thousand Demons no longer posed any threat to him—on the contrary, these demon beasts sensed the powerful aura emitted by Li Muran, and instinctively dodged aside, not daring to appear in front of Li Muran at all.

Li Muran easily found the entrance to the cave in the center of the earth - although it had been filled with rocks, Li Muran pasted a large five-element escape talisman on his body, and he could come and go freely and shuttle among the things of the five elements attributes, whether it was the sea of flames, or the forest and gold mines, rocks and sand, he could shuttle through it.

With the help of this Great Five Elements Escape Talisman, Li Muran quickly sank into the depths of the ground, and not long after, he appeared in the sky above the City of the Earth's Heart.

The glowstones embedded in the stone walls of the building still shone dimly, making it not dark.

"It's been three hundred years, and it's been a lot of ruins here!" Li Muran frowned, he looked around, the huge city in the center of the earth was full of ruins, and less than one-tenth of the buildings were intact!

This huge city in the center of the earth shows that the Night Clan was also very prosperous in the past, but as time passed, the Dark Night Clan gradually declined, the population declined, and many buildings were abandoned.

"I don't know how many people there are in the Night Clan!" Li Muran sighed lightly, and he let out his divine thoughts, enveloping this city in the center of the earth.

"Huh?" Li Muran's expression suddenly changed, he couldn't feel any breath!

With the power of his divine thoughts, it is enough to cover the entire city in the center of the earth, but he can't find a single breath, could it be that this place has been reduced to an empty city?

Li Muran frowned, could it be that in the past three hundred years, the Dark Night Clan has become extinct?

Li Muran flew into the city of the center of the earth, walking around the streets, looking around carefully, but he never saw a single figure, nor did he detect a wisp of breath.

Li Muran gradually walked to a place on the outskirts of the city, where there used to be a field where a grain called Darkflower Rice was grown, which was one of the main sources of food for the Darknight Clan.

However, at this time, Li Muran saw a messy grassland, most of which were unknown dark grasses, and only a small amount of dark flower rice grew in the meantime, and this field was obviously not taken care of for a long time.

Li Muran flew to a certain ruin in the center of the city again, he vaguely remembered that this was the most important ancestral worship site of the Night Clan, but at this time it had become a ruined wall.

Li Muran carefully explored for a while, and finally determined: This geocentric city is indeed a dead city!

"Could it be that I'm late?" Li Muran frowned, feeling quite uncomfortable.

Li Muran has cultivated the Dark Night Technique, and he is basically half of the Night Clan. Moreover, in this desolate land, the Dark Night Clan is the only human race, Li Muran is somewhat cordial to the Dark Night Clan, and at this time, he saw that the gathering place of the Dark Night Clan, the City of the Earth's Center, had been reduced to a dead city, and he was quite disappointed in his heart.

"Three hundred years ago, there were still more than 10,000 Night Clansmen in the City of the Earth's Core, even if they were not qualified and could not cultivate to the depths, they could at least continue to reproduce! How could they be completely extinct after three hundred years?" Li Muran was puzzled.

He felt that there must be another mystery to the disappearance of the Night Clan!

The demon soul said: "Generally speaking, there are no more than two reasons for the sudden extinction of the population. The first is that there is a natural disaster. For example, the terrible heavenly fire and thunder fall somewhere, and a city can be destroyed in an instant, and this phenomenon happens every once in a while in the demon world. Second, there is man-made disaster. Death from infighting or invasion by a foreign race can lead to the extinction of the population. This happens almost every day in the Demon Realm! You can take a closer look here to see what the reason is. ”

Li Muran nodded, he searched around in this dead city for clues left by the Dark Night Clan. However, this dead city has been abandoned for at least a hundred years, and it is difficult to find traces of the past.

Li Muran's careful search - this is what he does best. Li Muran is flexible and pays special attention to details, and some details that are easy to be overlooked, in Li Muran's view, often contain important information.

Half an hour later, the demon soul asked Li Muran, "How's that? Did you find any clues?"

Li Muran shook his head and said, "At present, it is only certain that this is not a natural disaster. There are no signs of landslides and cracks, no signs of submergence of the river, and no similar residues have been left as for the fire and lightning strikes. ”

"It's not a natural disaster, it's a man-made disaster!" said the demon spirit, "what do you think about this?"

Li Muran frowned and said, "After carefully inspecting the City of the Earth, I didn't find any obvious traces of fighting, and there were no exposed bones, indicating that they shouldn't have died in the internal fighting." ”

"It's not an internal fight, it's an external enemy!" "The Demon Soul Interface said, "It seems that the external enemy must be very strong!"

If it is an invasion by a foreign enemy, most of the Night Clansmen in the City of the Earth will resist with all their might, but there are no traces of fighting here, which means that the foreign enemy must be extremely powerful, and they will subdue the Night Clan in an instant, or they will be so strong that the Night Clan will not dare to resist at all!

"I can't even find the bones here!, could it be that the foreign enemy has already destroyed the corpses of the Night Clan?" Li Muran said with a light sigh.

"It's not impossible!" the demon soul said, "For high-level immortal cultivators, to destroy these corpses, all they need to do is stretch out their fingers and flick them, and a faint wisp of true fire is enough to turn these corpses into green smoke. ”

"Since it's a foreign invasion, it's likely that there will be something left that doesn't belong to the Night Clan. Even if you search through this geocentric city, you have to find out what kind of force is going to exterminate the Dark Night Clan!" Li Muran muttered.

The city in the center of the earth was reduced to a dead city, but there were no obvious signs of a fight, and there were no bones left. It shows that this invasion has been carefully deployed and planned, not only to take the city in one fell swoop, but also to deal with the aftermath cleanly.

This time, he searched more carefully, and under the ruins, not letting go of every brick and tile, grass or tree.

After searching for a long time, he finally found a special feather in the ruins.

This feather is about two feet long and brightly colored, although it has been too long, and there is not much left of the feather's aura, but Li Muran can still roughly judge that the owner of this feather should be a demon bird, and it is at least equivalent to the seventh-level cultivation in the early stage of the law phase.

"Back then, the patriarchs of the Night Clan were only in the fugue stage cultivation, and they definitely didn't have the ability to obtain the materials of the seventh-level demon bird! Could it be that this feather was inadvertently left behind by the foreign enemies who invaded the Night Clan?" Li Muran's heart moved.

"If that's the case, it might be the demon bird clan that invaded the Dark Night Clan back then, or the half-human and half-feather human clan!" Li Muran said secretly.

From this feather that has been separated from the body for hundreds of years, it is difficult to tell whether it is from a certain Feather Human Clan monk or a certain demon bird.

It just so happens that near this Ten Thousand Demon Valley, there is not only the foundation of the Demon Bird Clan, but also the gathering place of the Feather Human Clan, both of which are difficult to rule out suspicion!