In the vast northern region, there are more sandbanks than green areas, and in the vast territory of the northern region, any mountain range is just an embellishment on the yellow earth.

Although the mountains are full of foliage, monsters, and life, yellow sand is still the main color of the northern region.

The scorching sun hung high, releasing the heat with all its might, and a series of footprints were deeply sunk on the hot and soft sandy earth.

The group walked out of a mountain range and came here, and it was not difficult to find that this group of people was the dustless group heading towards the Valley of the Beast King.

Wuchen gave up the comfortable and fast flying demonic beast, and instead arrived here step by step, and the reason was because of the Black King's words.

"From today onwards, hunt a fifth-order demon beast every day and feed it until you find out if there is a machine spirit or not!"

Of course, this sentence is just a suggestion to Wuchen, and what really makes Wuchen do this is the ancient and mysterious primeval voice in the black lock at this time.

Standing on his feet, Wuchen slowly looked back at the mountain range behind him that had only walked out for five days, and took a deep breath and said, "Ten fifth-order demonic beasts in five days, even if there are machine spirits, they should have appeared a long time ago, right?"

Wuchen said as he looked down at the black lock on his wrist, which was as calm as ever without the slightest movement, and a look of disappointment appeared on his face.

Under the scorching sun, sweat flowed out and dripped onto a deep scar on his chest, bringing a piercing pain.

Wuchen clenched his teeth, just frowned slightly, and returned to normal.

From the weakness after killing a fifth-order demonic beast by himself for the first time, to now being able to kill a fifth-order demonic beast within ten rounds, there is almost no loss of Yuan power.

In the process of trying to summon the Weapon Spirit, it is worth reassuring to Wuchen that his strength is undergoing a qualitative change.

However, at this moment, there was no joy on Wuchen's face, and it was getting closer and closer to the beginning of the Medicine King Gu Dan Meeting, if he couldn't find out whether there was a machine spirit in the Ancient Relics within three days, even if Wuchen had all the expectations in his heart, he could only give up first.

And just when Wuchen was distressed because of this, the black king on the side was also frowning, and his face was very entangled.

During the five days, the Black King personally saw that every fifth-order demon beast quickly turned into a dry corpse after getting close to the primeval relics, and it stands to reason that there should indeed be a machine spirit among them.

However, when the ten fifth-order demon beasts were all fed to the primeval relics, there was still no change in the result, which made the black king very stunned.

You must know that the Black King was so seriously injured at the beginning, and he regained consciousness after absorbing the essence blood of five fifth-order demon beasts, and now the total amount of the demon beast's essence blood absorbed by the latter has been twice that of the Black King, but there is still no movement, which really makes the Black King a little unbelievable.

In his astonishment, the Black King suddenly thought of two possible explanations for the current situation.

One is that the damage to the spirit in the primeval legacy is far greater than his own, and he must have more demon beast essence blood to awaken it.

Another possibility is that the machine spirit has been resurrected, but it is just deliberately not revealing its breath in order to deceive more demon beast spirits!

Taking a deep look at the black lock on Wuchen's wrist, the black king's face became very strange, if it was really the second possibility, wouldn't he have been tricked?

"How much time is left?" asked the Black King, taking a deep breath.

"Three days at most. ”

Wuchen calculated the distance, and there was still a distance of more than 1,400 miles from the Valley of the Beastmaster.

If you continue to walk forward, you will definitely not be able to catch up, so you can only delay for three days at most, and Zuihou has to ride the Qinglin bird to arrive in time.

Hearing this, the Black King nodded slightly, and said, "I'll shoot with you, and hunt more demonic beasts, your speed is too slow." As soon as the Black King finished speaking, his figure continued to sweep forward.

Seeing this, Wuchen was also slightly stunned, and he was full of joy, with the help of the Black King, the speed of hunting demon beasts would inevitably be much faster.

After resisting Fang Rou and Yang Xi and the little girl to continue to move forward without stopping, Wuchen caught up with the footsteps of the Black King.

Two thin figures swept across the vast desert, and before they stopped once, a fiery battle would break out there.

Three days passed, except for Wuchen personally hunting four fifth-order demonic beasts, the Black King brought back more than twenty demon beast corpses, two of which had a stronger aura than the others, obviously higher-level demon beasts.

A low-lying area, dust-free and a few people gathered together.

"Throw them all in!" the Black King shouted at Wuchen as he pointed to the corpses of nearly thirty demon beasts on the ground whose strength was above the fifth-order fusion.

Hearing this, Wuchen had an extremely painful expression on his face: "Throw it all in?"

Wuchen's heart is dripping blood, because if the corpses of these demon beasts in front of him are auctioned, they can definitely be exchanged for a volume of spirit-level **.

However, for the sake of a trace of expectation in his heart, Wuchen finally gritted his teeth and put it into the black lock.

Just as Wuchen was collecting the corpse of the demon beast, the black king on the side whispered: "I don't believe that I can't kill you!"

With so many demon beast corpses being collected into the beast control lock, the rich essence instantly filled the black lock.

Although he had never entered, Wuchen could feel that it was very dangerous in the black lock at this time, and if he entered, he would inevitably be crushed by the bloody violence at the first time!

The corpse of the demon beast entered, probably because it took time, so there was no change.

Wuchen calculated the time, didn't dare to delay, and hurriedly summoned Qinglin Bird to end the trip.

During the flight, Wuchen didn't know what kind of changes were happening in the black lock on his wrist.

The still, primeval voice, suddenly trembled, and an illusory figure suddenly flew out of it.

Volleyed over the corpses of the demon beasts everywhere, and seemed to sigh.

Turning around and landing on the side of the Ancient Relics, he stretched out his hand and drew out the spirit of the demon beasts, which was applied to the Ancient Relics.

A magical scene suddenly appeared, and three silk threads of the same color as the surface of the piano slowly condensed on the bare bones, but after the figure stopped, the silk threads disappeared strangely, as if they had never appeared.

Raised his head slightly to look at Xiangshang Fang, an old face was full of traces left by the years, and his deep eyes could not see the bottom at a glance, which made people fall into it at a glance and couldn't extricate themselves.

The figure suddenly sat upright, his hands resting on the primeval sound, and the previously lost strings reappeared.

Gently plucking his fingers, a high-pitched piano suddenly sounded, like thousands of birds and phoenixes, like thousands of birds chirping in unison, like a hundred beasts roaring.

And at the moment when this piano sounded, the corpses of several demon beasts that had not yet absorbed the essence in the black lock came to life in an instant

The sound of the piano seems to have the power to penetrate everything, and the black lock that penetrates energy seems to be able to isolate everything rings outside it.

On the back of the Qinglin Bird, the Black King was shocked when he heard the sound, and the Qinglin Bird was directly shocked by this sound of the piano and couldn't move, and it rolled and fell downward