Judging by the sound of footsteps, the four-legged beast was not large, its gait was slow, and the footsteps were concentrated in a relatively fixed area, and it did not move around.

Since he didn't dare to use the aura sense, he couldn't determine the species of the four-legged beast and whether it had aura cultivation.

In the world's cognition, the beasts that become sperm are often proud of being able to change their human form, but this is not the case, the beasts do not look up to humans, at least not at this time, they prefer to move with their original beast body when no one is around, so it cannot be denied that it is not a demon king because this four-legged beast has not changed into a human.

Because the outside is a dry desert, the cave is also very dry, there is no damp mildew, the cave is very large, there are many branch holes outside the main cave, the so-called small hole is only for the empty main hole, in fact, the small hole is not narrow, there are branches outside the small hole, the whole cave branches are horizontal, criss-crossed.

Wu Zhongyuan held his breath and condensed, cautiously stealth forward, at the same time carefully looked at the cave, this cave should be a natural achievement, and the day after tomorrow after repair, it is a special pattern between a cave where beasts gather and human houses, because the cave is very dry, there is no moss breeding, you can see that the corners of many forks are very smooth, this is not artificially polished, but caused by perennial habitation, and the smooth area is of different heights, some forks of the smooth area are not more than a foot from the ground, and some of the forks of the smooth area are from the ground, it can be seen that there is not only one species of beasts living here。

The dry environment also completely preserved other things in the cave, including corpse bones everywhere and a large number of broken sword remnants, broken weapons and Sen Sen's white bones can be seen everywhere, he is not a forensic doctor, so he can not classify the white bones in detail, can only roughly see that the white bones in the cave are mostly wild beasts, among which there are also human bones, but there are not many of them.

For the location of the old nest of Wudao, there is no relevant written record, what is already known is that the beast clan is in Kunlun Mountain, the demon clan is in Sanxingdui, and the ghost clan is in Xudu, as for the god clan and the demon clan, there is no discovery, but all kinds of signs indicate that this is likely to be the old nest of the demon clan, and a large number of white bones and mutilated weapons indicate that there was a fierce war here back then.

For fear of startling the snake, Wu Zhongyuan moved very slowly, and the footsteps in the distance during this period were intermittent, even if they appeared occasionally, they were very short-lived.

Wu Zhongyuan had missed a hand before, but this time he became more and more cautious, and as he walked forward, he thought through the details of the upcoming surprise attack in his mind, including how to draw his sword, how to approach, and what angle to attack.

Walking forward a hundred and ten zhang, Wu Zhongyuan saw the end of the cave, at the end of the cave there is a natural achievement of the stone platform, the high platform has also been polished and carved the day after tomorrow, there is a huge snake head in the north close to the stone wall, the snake head is carved out of stone, showing the posture of opening the mouth and showing teeth, its form is somewhat similar to the candle Jiuyin on the lintel of the altar of the beast clan, but it is also different, the snake head carved in stone has a wide stone seat in the middle, not so much a seat, more like a wide stone bed, you can lie down and rest from it, you can also sit upright to discuss matters。

This wide seat is undoubtedly the seat of the demon king, and there are five seats around the main seat, which are also stone, slightly smaller than the main seat, but also much larger than the dragon chair in the Middle Heaven Temple.

Under the command of the demon king, there are five generals of gold, wood, water, fire and earth, and one main and five deputy six seats here further prove that this is the lair of the demon clan.

The sound of footsteps did not come from the end of the cave, but from a branch cave on the right, and after a short silence, Wu Zhongyuan did not immediately turn into a fork in the road, but continued to move forward, came to the end of the cave, and carefully observed the seat that belonged to the demon king.

According to common sense, if the demon king returns to his hometown, he will definitely come to his throne to take a look, and may even sit down to find out how he felt back then.

Due to the abandonment for many years, a large amount of dust has accumulated in the cave, and after careful observation, it is found that there are paw prints and footprints near the Demon King's throne, and the footprints are barefoot footprints, if calculated with modern shoe sizes, it should only be thirty-five yards, which is obviously a woman's footprints. The paw print is melon seed shaped, which is characteristic of canine paw prints, and if it is a feline, it will be a very round plum blossom shape.

There are also traces of sitting on the throne, and there is a complete and clear shape of the woman's buttocks, two things can be determined through the imprints, one is that this woman is petite, and the reason why the tall and thin type is excluded is that it combines the footprints of thirty-five yards, the higher the woman, the bigger the feet, most women are like this, and there are very few big and tall people who have small feet.

One thing can also be determined through the imprints, that is, the woman is not wearing pants, because the shape of the hips left on the seat is too clear, even if she wears a gauze dress, it will not be clear to this extent.

After a short observation, Wu Zhongyuan left the Demon King's throne and moved slowly towards the fork in the road where the sound came from, at this time he was already able to determine that the Demon King had been here, and it was probably in the fork in the road cave where the voice came from.

After walking not far, Wu Zhongyuan suddenly found that a large amount of sand had accumulated in the northeast corner at the end of the cave, and this pile of sand had obviously flowed down from the top of the cave, and it had been piled up very high.

Looking up, you can vaguely see a square gap on the top of the cave a few feet above the ground, the gap is not large, and there is a faint light penetrating.

The stone wall is not straight up and down, but has a certain slope, and there are a large number of paw prints on the stone wall leading to the gap at the bottom, these paw prints are very small, and they are likely to be left by Huang Mao.

As the saying goes, the rabbit is far less cunning than the fox, there is a word called fox suspicion, the fox's biggest character trait is suspicious, he talked about it with the old blind man that day, the old blind man once guessed that this cave is the chimney of the ancient city, now it seems that this is not the case, according to the location of this hole, the gap in the top of the cave is likely to be the emergency retreat left by the demon king for himself, it should be a dense forest back then, the hole is hidden in the secret area, not as obvious as now.

While moving towards the fork in the road where the sound came from, Wu Zhongyuan was distracted to perceive Huang Mao'er's location, at this time Huang Mao'er had already entered the edge of the desert, and it wouldn't take long to get here.

Arrived at the entrance of the branch cave, Wu Zhongyuan stopped, the color of the rock at the entrance of this cave is different from the rock at the entrance of other caves, it is dark red, he had read the books on minerals left by Li Lanshan before returning, Li Lanshan is the Taoist priest who wants to kill him in modern times, and it is precisely because he read the books left by Li Lanshan, he has an understanding of various minerals, this dark red color is ochre, which is what later generations called iron ore.

The nature of the cave excavated from the iron ore is the same as that of a sealed iron tool, and once entered, there is a risk of being trapped.

Wu Zhongyuan had suffered a loss before, and this time he became more and more cautious, there were branches in this branch cave, and the footsteps of the four-legged beasts came from the depths of the cave before, and the situation inside could not be seen from outside the cave, and it was too dangerous to enter rashly.

Before entering, he had to find out a few details: first, was it the demon king inside? second, why did the demon king make a noise? third, why did Huang Mao'er come here in a hurry? fourth, what was the motive for this iron mine cave to be excavated in the first place? And if it was a trap, could he get out of trouble before the trap was started?

Everyone in the world knows that details determine success or failure, but there are still many people who ignore the details, in the final analysis, it is because of laziness, there is a saying called "lazy, blind", people who are too lazy to spend energy to think and figure out the details, will definitely become the prey of others to deceive and ravage.

First observe the surrounding area of the cave, like other cave entrances, it is very smooth, which shows that this cave was also frequented by beasts back then, and it may not be used for living but for other purposes, in short, it was used frequently.

In addition, there are no traces of the gate at the entrance of the cave, as well as the inner part of the cave visible to the naked eye, which means that even if you enter, you will not be blocked inside.

As for the motive for the excavation of this cave, it should have been a coincidence at first, after all, it seems that the veins of this iron ore were not created by man. However, after the excavation is completed, the demon clan will definitely take advantage of the characteristics of this cave that does not have yin and yang, and it can be used as a treasure trove for important things, and it can also be used as a prison for prisoners.

As for why Huang Mao'er came in a hurry, it is likely that the demon king touched something, which made Huang Mao'er feel something.

Is it a demon king inside? If so, what is the demon king doing in it? You have to go in to find out.

Go inside, and if you don't see the situation well, you can teleport away.

During the time that Wu Zhongyuan was thinking, there was no sound of moving, for fear of startling the snake, he didn't dare to use the aura to explore, so he could only wait patiently.

A moment later, the footsteps were heard again.

Hearing the sound of footsteps, Wu Zhongyuan slowly entered the cave, he had not breathed for a long time before this, and his concentration had increased to the limit.

There are only two caves in this branch, one left and one right, and the footsteps are called from the cave on the left.

One zhang, two zhang, three zhang, finally saw the scene in the cave on the left, the cave is in a narrow shape, there is a stone door at two zhang, there is a complex pattern on the stone door, there is a red-haired little fox squatting in front of the stone door, at this time is staring at the pattern on the stone door out of the stunned.

Seeing that the demon king was really here, Wu Zhongyuan's blood surged instantly, and the steps of the forward-looking plan in his mind were immediately implemented......