Even if they lost most of their strength, the second-level spirit master-level demon beasts were terrifying.

I heard a "boom", and the ground shook violently, and a large amount of gravel and earth fell from the roof of the cave, raising dust in the sky.

Before Lu Fei and the others could react, the snake tail of the black rock python swept away again, smashing fiercely into the black shadow in the smoke and dust.

What followed was a continuous loud noise that reverberated around them, and one after another of intense spiritual power released a terrifying brilliance.

The figure wrapped in the spiritual power wanted to break away, but the Black Rock Snake's attacks were continuous, not giving him any respite at all.

A moment later, the spiritual power dissipated, and the black shadow smashed heavily into the rocks not far away.

"He can't do it, but you humans are too cunning, now it's your two's turn to make a move, and my body can't get past that position. The big snake's slightly tired voice sounded in the ears of Lu Fei and Nan Tianyi.

Lu Fei didn't hesitate at all, his figure flashed out, and with a slight slash of the small sword in his hand in the darkness, a head flew up from his side.

After doing all this, he breathed a sigh of relief, but at this moment, the big snake suddenly opened its mouth and swallowed the yang snake fruit not far away.

At this time, Nan Tianyi had just approached the position of the Ten Thousand Snake Fruit, and when Lu Fei moved just now, she also moved, but she had already discussed with Lu Fei that one person had one target, but the speed of the big snake was faster.

"Don't blame me, you humans are too cunning, I've been trapped here and it's hard to recover, although the Yang Snake Fruit is of no use to me in my heyday, but now, it can stabilize my state, and it consumed a lot just now. ”

Lu Fei stared at it fiercely, just now he thought that this snake was quite pure, but now he knew that it was a snake with a black belly.

Let's hope there's an antidote to this old guy.

Soon he was disappointed, and although the old fellow had a lot of things in him, he didn't have what he wanted now.

"What now?" Nan Tianyi's face turned pale, and the severe pain made it difficult for her to speak.

"Don't worry, this poison is not so difficult to eliminate, mainly because the amount is too large, there is still some Yin Snake Fruit left, swallow it slowly, it should be able to last for a while, see if you can clean up most of the toxins before the Yin Snake Fruit is exhausted. Lu Fei said with a little comfort.

The big snake said in an ugly voice: "As compensation, I can tell you a secret, forty meters in front is the center of the magic circle here, and I once felt a huge spiritual power fluctuation in that place when the master was still there. ”

Lu Fei ignored it, swallowing a small piece of green snake fruit while starting to clean up the toxins in his body.

Luckily, the dead guy seemed to be worried about being discovered by the big snake and didn't put more of this toxin on them.

Days passed, and the faces of the two were already pitch black, some of them were toxins that had been removed, and some of them were dead flesh affected by toxins.

It wasn't until the last bit of Yin Snake Fruit was refined by them that the two finally opened their eyes.

"How's it going?" Lu Fei hurriedly asked.

"I shouldn't be able to die, what about you?" Nan Tianyi smiled on his swarthy little face.

"What do you say?" Lu Fei gently put his right hand on her waist and stroked it slowly.

"Get away, it's dirty!" Nan Tianyi was like a frightened deer, his whole body tensed instantly, his delicate body moved away, and he said loudly.

Even in the dark, Lu Fei seemed to see a little blush on Nan Tianyi's little face.

"Ahem, I'm kidding you, I'm afraid I'll never find such an opportunity again, and I still have more than half of the toxins in my body・・・・・"

"Really, really?"

Hearing Lu Fei's words, Nan Tianyi immediately panicked, and hurriedly grabbed his hand, wanting to explore the condition of his body.

"Hahaha!!fake!" Lu Fei laughed evilly, grabbed Nantian's little face fiercely, and chewed it indiscriminately.

It wasn't until both of them were out of breath that Lu Fei reluctantly let go of his hand.

"It's strange that you humans were going to die just now, and then you became happy again. At this time, the strange voice of the big snake sounded.

"You demon beasts, don't speak!" Lu Fei said in an indignant voice, he was still worried about this guy swallowing the Yang Snake Fruit, after all, a Yang Snake Fruit was too important to him.

This place is relatively hidden, and now it seems that the big snake should be safe for them, even if the big snake wants to do something, it can't break free from the chains there.

It was a thigh-thick iron chain, buried deep in the ground, and he and Nan Tianyi had seen it before.

In this way, after more than a month, Lu Fei and Nan Tian cleaned up all the toxins in their bodies.

At this time, Lu Fei looked at a place not far away, where the big snake said that there was once a powerful spiritual power fluctuation.

The fact that this underground space can maintain such a strong spiritual power fluctuation all the time is probably inseparable from that place.

After a moment's hesitation, the two of them walked over anyway.

"Is this here?" Lu Fei paused slightly, looked at the big snake and said loudly.

"It should be there, you can't feel it directly, there is a stone slab a few meters under your feet, and the formation pattern is imprinted on the stone slab. ”

Turning over the soil, Lu Fei really saw a stone slab, and he threw a stone at the stone slab, as if hitting an invisible barrier, and the stone was immediately bounced away.

"Be careful. Nantian instructed him.

"Hmm. Lu Fei nodded slightly, and he began to try to break the spirit pattern on it.

The strength of the spirit pattern on it was not high, and he soon broke it, which made him a little strange, after all, from the spirit pattern above, this spirit energy circle should be very advanced.

It may be that it has been too long and has not been repaired, and it has slowly broken down on its own.

After it was broken, a huge spiritual power came from below.

Below was a groove, only a foot square, and now there was a little bit of light white liquid in it!

Lu Fei was shocked, and immediately took out a jade bottle and collected the liquid inside.

After doing all this, he and Nan Tianyi stood up without changing their faces.

"What's in there, I love the smell I just smelled. The big snake asked curiously.

"Spirit milk. ”

"What is the Spirit Milk?" Although the great snake is very strong, it is obviously not so clear about the name of the human being.

"Hehe, spirit milk・・・・・・"

Lu Fei didn't plan to explain to it, but instead sat down and took out the jade bottle, looked up and drank it a little, and then handed the jade bottle to Nan Tianyi.

Nan Tianyi also raised his head slightly and swallowed a little, and began to refine.

The Black Rock Serpent looked at the two of them, its huge pupils full of confusion, and it felt that it still knew too little about humans.

But now that the place has been opened, it's also a great thing for it.

At this moment, Lu Fei Nan Tianyi and Black Rock Snake were undergoing amazing changes.

Swallowing the spiritual milk, he felt as if he had swallowed a fireball, and this fireball had an amazing energy, which made the cells in his whole body suddenly run wildly.

This is a radical change that is happening in Lu Fei and Nan Tianyi.

It is extremely difficult to form a spiritual milk, as long as the Yang Snake Fruit is successfully cultivated, it will be possible to have one in twenty years, but the spiritual milk is too difficult.

Compared with the Yang Snake Fruit, the spiritual milk is what Lu Fei wants more.

Not long after refining the spiritual milk, Lu Fei began to sweat all over his body, and some black stains slowly seeped out of his pores.

This process lasted for half a month, and Nan Tianyi was not much better than him, and her snow-white skin was still pitch black, but she did not exude an unpleasant smell like Lu Fei, but a faint fragrance.

This is Nan Tianyi's body fragrance, and this smell is very familiar to him.

After removing the stains in his body, there was still a lot of spiritual power in the spirit milk, and Lu Fei did not hesitate to urge the spirit array in the spirit sea to start absorbing it.

Another month passed, and the spirit array in Lu Fei's spirit sea began to change, and a huge spirit array formed on top of the third-level apprentice's spirit array, and a faint coercion shrouded it, and the third-level apprentice spirit array melted into the Ling Sea like snow.

Level 4 Apprentice!

At this moment, he finally stepped into the realm of a fourth-level apprentice.

After becoming a fourth-level apprentice, there is still a lot of spiritual power in the spiritual milk that has not been refined, and these spiritual powers are hidden in his body, slowly changing his body.

Not long after, there was also a violent fluctuation on Nan Tianyi's body, and then she was promoted from a fourth-level apprentice to a fifth-level apprentice.

"It seems that the effect of that spiritual milk is not small. The voice of the serpent rang out.

Lu Fei and the others glanced at it, their faces suddenly changed, and the joy after the promotion was also diluted.

"Where's the chain?" the atmosphere in the air unconsciously became solemn.

"I've broken free in the time you broke through. ”

"But don't worry, I won't do anything to you, and now you can leave if you want, and I'll stay here for the time being. ”

Lu Fei looked at its huge eyes and was relieved to make sure that it hadn't lied to them.

Then they went around again, and from the surrounding environment, it was almost a huge ruin, and they didn't see anything of value, but it was right to think about it, if there were really good things, I am afraid they were all taken away by the old guys from the first two times.

"There wasn't anything here, and some of them were taken out by the human, but I seem to remember that there was a door under the pile of rocks. ”

This time, Lu Fei felt that the voice of the big snake was not so ugly, and he glanced at Nan Tianyi and walked to the stone pile.

"Will you lie to us?" Nan Tianyi looked at the big snake with an unkind expression.

She was still angry about the big snake eating the yang snake fruit and quietly breaking free from the chain.

Lu Fei thought about it, the big snake didn't do anything excessive to them, and shook his head: "It shouldn't be, after all, it has broken free now, and we don't pose any threat to it." ”

He decided in his heart that he chose to believe in this big guy, and he had always been very confident in his feelings.

Then the two of them quickly cleared out the pile, revealing a stone door in the wall.