Sun Xiaofei's speed was extremely fast, and in the blink of an eye, he flew into the cave on the periphery of the palace, which was a huge maze array, like a labyrinth, specially designed to trap people who wanted to enter the palace. At the beginning, Sun Xiaofei knew how powerful this formation was.

He was able to come out at the beginning, and he was also a little lucky. Now that he has learned Byron's true transmission of the formation, this formation no longer poses any threat to him. He easily found a correct path and followed the direction from which the sound came.

Somewhere in the cavern, two huge monsters were fighting together. One of these two demonic beasts was the giant beast that Sun Xiaofei had seen on the ruins, and the former's opponent was a snake demonic beast that was not inferior to it.

This big snake is blue-gray in color, with a flat and round head, and there are some strange lines above the crimson eyes, exuding a gloomy and cold aura, which makes people shudder.

The giant beast and the big snake seemed to see each other as mortal enemies, frantically attacking each other, fierce collisions and roars continued to sound, the scene was in shambles, and all parts of the cave were destroyed by the aftermath of the battle between the two monsters, and there were traces of various cracks.

When Sun Xiaofei came to the scene, he happened to see the fierce battle between these two monsters, and his expression changed. Hurriedly find a hidden place to hide, and secretly spy on the battle between the two demonic beasts.

The strength of these two demonic beasts had already reached the level of the Emperor of War, although Sun Xiaofei was a little stunned, how could such a powerful demonic beast appear here. However, he was even more secretly lucky in his heart, remembering that he had not encountered the big snake in this cave in the first place. Otherwise, it would not be easy for him to come out at that time.

Now seeing that these two demonic beasts are fighting so fiercely, Sun Xiaofei watched quietly for a while, and then he saw something. The cave was originally not very large, and it didn't have much to do with the bodies of humans like Sun Xiaofei, but for the two huge magical beasts, it was quite narrow.

Originally, the big snake occupied a convenient location and was able to walk through the cave unimpeded. However, when the behemoth came in, these advantages were gone. Due to the limitations of the cave, its attack methods are limited to the breath of the giant mouth, and many techniques cannot be applied, and its combat power is naturally not as powerful as that of the giant beast.

The beast's claws and sharp teeth are its powerful attack weapons, and it firmly controls the situation and has the upper hand in the battle with the great snake. Under its fierce attack, the serpent retreated, and the latter's body was covered with scars of less than the size of the body, some of which were deep enough to see the bones and looked shocking.

However, the big snake's counterattack is also very fierce, especially the poisonous liquid sprayed out of the big snake's mouth, which also makes the giant beast very afraid. Every time the serpent opened its jaws to reveal a hint of spitting, the beast would immediately retreat, not daring to approach and attack, and in this way, the serpent was able to breathe, making the battle a tug-of-war.

In this Warcraft Duel, the strength of the Great Snake was not weak, and the wisdom of the eighth-order Warcraft was no longer inferior to that of normal humans. The size of the cavern limited the serpent's playfulness, and its two most powerful attacks, devouring and entanglement, were unable to perform on the beast, causing it to be inferior in this battle.

The serpent opened its mouth and spewed out a mouthful of venom, forcing the beast back, and then quickly fled, as long as it returned to the cave where it lived, it would be able to deal with the beast more ways.

When the giant beast saw the serpent fleeing, it roared and chased after it, its thick and powerful claws trampling on the ground with a loud rumbling sound. With a canopy of dust, he disappeared into the dark cavern.

When Sun Xiaofei saw this scene, his heart moved, and he cast a spell to conceal his aura, and quietly followed, following behind the two demonic beasts.

The level of these two demonic beasts is so high, if there is a chance to get it, it will definitely be a great thing for Sun Xiaofei to fall from the sky.

Sun Xiaofei followed the giant beast all the way, and his excellent concealment ability allowed him to hide his body well without being noticed by the giant beast.

Half a quarter of an hour later, Sun Xiaofei followed the giant beast to a huge cave, this cave was many times larger than other caves, and judging by its size, it could at least accommodate dozens of giant beasts to enter it. The whole cave seems to be a little dim, there is no light around, and ordinary people must have a great impact on their vision when they come here.

Of course, these did not hinder Sun Xiaofei, he used his spiritual power in his eyes, and it was easy to see everything inside. In the cave, the serpent coiled its body into a pyramid-like posture, and its cold green snake eyes stared coldly at the giant beast.

The giant beast seemed to know that the big snake was not easy to deal with now, so it didn't rush forward rashly, and walked slowly around the big snake with some caution, roaring from time to time to proclaim its majesty.

Sun Xiaofei used the Great Five Elements Escape Technique and quietly sneaked into the cave, although all the places here were restricted by the formation. However, he had already cracked all the formations, so he naturally knew how to escape in the formation.

In his perception, he found that there was an impenetrable area in the depths of the cave, and there was a faint aura in that area that was familiar to him. Sun Xiaofei's figure appeared on the cave wall, his eyes staring at the inside of the cave, where something seemed to exist?

"Roar ......!"

"Boom!"

In the cave, the two behemoths finally couldn't help but start attacking each other, and a huge sound echoed in the cave, and all kinds of collision sounds reached Sun Xiaofei's ears. With Sun Xiaofei's temperament, he naturally wouldn't go over to join in the excitement now, he carefully observed, and saw that the two demonic beasts did not find any trace of him, and then his body moved slowly, approaching the place he sensed.

It didn't take long for Sun Xiaofei to enter the cave, his face appeared on the cave wall, and between the turns of his eyes, his gaze had locked on a place. On the ground of the cave, there are many large and small stone pillars on the cave wall, the surface of which condenses milky white liquid, dripping into a sunken stone pit under the stone pillar, there is a brown liquid in the stone pit, and there is a strange herb that Sun Xiaofei can't say the name of growing in the liquid. The outside of the stone pit is full of the skin of some big snakes, emitting a strange smell,

The plant has only three leaves, and the broad shape of the leaves is oval, with many intricate lines on it, which looks a bit like a strange grimace. This strange plant has a black and white fruit growing at the top, giving off a strange smell.

When Sun Xiaofei saw this strange plant, he felt that this thing was a little unusual, it should be a precious herb that had grown for an unknown number of years. Sun Xiaofei's eyes lit up, and his figure immediately appeared on the edge of the stone pit, and after careful observation, he felt an amazing aura filling the stone pit, and suddenly, a surprised smile appeared on his face

"It's ...... Milk in the center of the earth?"

Sun Xiaofei stretched out his hand, took some milky white liquid and examined it, and then slowly put it in his mouth to taste what it tasted like. At the entrance, Sun Xiaofei screamed in surprise.

He knew the role and specific effects of the stone milk in the center of the earth, and when he saw the stone pillar hanging here just now, he already had some doubts in his heart. Now it is confirmed that these milky white liquids are the so-called geocentric stone milk.

The stone pit was filled with a layer of gray mist, and only when you got close could you discover the pure energy contained in the mist. Sun Xiaofei took a deep breath, and suddenly felt a cool breath rushing to his mind, it was exactly the same as the gray energy he had absorbed that day?

"Could it be that this is the Eye of the Spirit Spring?" Sun Xiaofei muttered to himself with some uncertainty.

The so-called Spiritual Spring Eye is a place where the spiritual energy gathers that cannot yet form a spiritual vein. Despite this, the efficacy is similar.

Discovering that the liquid in the stone pit actually had such a wonderful use, Sun Xiaofei immediately became excited, and a trace of greed appeared in his eyes, looking at the strange plant growing in the stone pit.

The liquid in the stone pit is already such a rare spiritual fluid, so the effect of the cultivated things will not be weak as long. This unknown herb immediately became a hundred times more valuable in his eyes.

Sun Xiaofei's handprint changed to cast a spell, blocking this space to prevent it from being discovered by the two high-level demonic beasts in the cave, and ingesting the stone pit and the surrounding stone milk into the storage spirit weapon out of thin air, he could vaguely guess that the big snake outside was the guardian beast waiting in the center of the earth.

He had the opportunity to meet these rare treasures, and he certainly didn't want to miss them in vain.

After Sun Xiaofei put the stone milk in the center of the earth, stone pits, medicinal herbs and other things into the storage artifact, he carefully inspected the scene again, and after finding no mistakes or omissions, he immediately turned around and left.

This place is the lair of the big snake, he doesn't want to stay, and when the big snake comes back and finds out about it, he becomes a victim of the big snake's anger in anger, so he should leave quickly.

Sun Xiaofei accelerated all the way, his figure loomed in the cave, and soon came to the place where the two beasts were facing each other just now.

"Why is there no sound?"

Sun Xiaofei suddenly noticed that there was no movement around him, and the fierce fighting sound of the two demonic beasts seemed to disappear all at once. He felt a little strange in his heart, and after careful searching, he found the location of the two demonic beasts.

Sun Xiaofei saw that the giant beast was tightly entangled by the big snake, and he couldn't move at all. The two beasts were in a stalemate, covered in scars and bloodstains.

It could be seen from the fluctuation of their breaths that both beasts were already in a weakened state, and it was obvious that the fight just now had consumed most of their physical strength.

Suddenly, seeing the situation in front of him, a thought appeared in Sun Xiaofei's heart, and his eyes suddenly brightened.

If it was possible for him to subdue or kill these two demonic beasts, then the harvest he would have gained this time was unimaginable. Thinking of being able to have the opportunity to obtain two eighth-order demonic beasts, Rao is Sun Xiaofei's current cultivation state of mind couldn't help but become excited.