The black mist was very viscous, like silt in a swamp, even if Zhou Nan used all his strength, the flight speed of the sealed dragon coffin would not be able to get up fast. In desperation, he could only continue to squeeze himself and fight with the black mist to build up his endurance.

Although with the tenacity of sealing the dragon coffin, this black mist may not necessarily corrode. But staying in it all the time, Zhou Nan's strength was like flowing water, flowing loudly. In a short time, his face turned pale and he felt a great weakness.

Looking at Zhou Nan's increasingly pale face, Bu Wan'er lowered her head, not daring to make a sound. The only thing she could do was clasp her hands and think about everything she had to think about, diverting her own attention.

Time flies, but in the huge atmosphere, it feels very slow.

Half an hour later, Zhou Nan's body softened, and he finally breathed a long sigh of relief.

Hearing this, Bu Wan'er raised her head, stared at him, and asked, "Brother Zhou, are we coming out?"

"Whew, yes, come out. After a few gasps, Zhou Nan smiled reluctantly, opened the sealed dragon coffin, and slowly walked out of the coffin. Bu Wan'er also jumped out of the curl, staring, looking deadly.

I saw that the large pit that was originally only a thin layer of well-camouflaged pit would be covered with black mist, constantly wriggling, and making an infiltrating 'zig' sound. After looking at it for a while, Bu Wan'er picked up a stone and gently threw it into it.

Suddenly, only a muffled sound of 'whoosh' was heard, and in a short period of time, the fist-sized stone was corroded into smoke. Not even a single scum remains. Seeing this, Bu Wan'er stuck out her tongue. His face was full of joy.

"Whew, don't try. It's not safe here, so we'd better get out of here. After a while, Zhou Nan glanced at Bu Wan'er helplessly, then put away the sealed dragon coffin and walked forward quickly and cautiously.

Something like this, although it seems dangerous, is nothing to Zhou Nan except for the fact that the consumption is a little large.

As long as you have the sealed dragon coffin in hand. These problems are really not a problem.

Maybe even he didn't realize it, but since when, he has become very dependent on the sealed dragon coffin. Today, half of his strength has been pressed on the top of the sealed dragon coffin, and he has to be a little deformed.

Sensing this, Zhou Nan frowned. There was a sudden crisis in my heart. Although for immortal cultivators, relying too much on magic weapons is not a big deal. But for him, this is not a good thing.

A truly powerful immortal cultivator. The first thing that is strong is the heart, and the second is the external object. If you have no fighting spirit in your heart. There is no faith. That is, the king of heaven Lao Tzu is your godfather, and you are only a loser in the end. There could be no big accomplishments.

People who really laugh to the bottom and succeed steadily. What I never believed in was anything foreign. Although many times, not believing in foreign objects, it is simply impossible. But even if you have to believe, there should be a degree of belief, and it shouldn't be too much.

Thinking of this, Zhou Nan's mood unconsciously became nervous. He suddenly found that if there was no sealed dragon coffin, and there was no "Soul Refining Decision", then he Zhou Nan would still be the current Zhou Nan? Yes, he was scared and panicked.

"No, it's just assumptions. No matter what happens, I, Zhou Nan, or Zhou Nan, will always be. Whether it's the sealed dragon coffin or the "Soul Refining Decision", I have worked hard to get it, how can I doubt it?" Zhou Nan shook his head and muttered.

I don't know what he thought of for Lu, but for the first time, Zhou Nan still suppressed these thoughts.

Although this issue will not go away, the time when it needs to be discussed is not now, at least after a while.

Since he had learned the previous lesson, this time, Zhou Nan has been completely careful. Every step you take, you pay close attention to your step. I'm afraid that if I'm not careful, I will encounter the big pit like before, and I will fall into blood mold.

Fortunately, the next formation was not only because of his caution but also for some other reason, and that kind of pit that is rare in a hundred years has not appeared again. So, ten days later, the two of them arrived at the center of the second floor.

The second floor of the Necromantic Stream, in addition to the special environment, its center is also magical. In the center of the second floor, there is a lake the size of a hundred zhang. Unlike other lakes, this lake is very special in that it is filled with pitch black water.

As soon as he entered the lake, Zhou Nan clearly felt that the heat around him had completely disappeared.

As we continued to advance, a fishy smell appeared in the air. At first, it was very faint, and you had to push hard to notice it.

But when it comes to the worst of the day, even if the nose is blocked, the stench can no longer be isolated.

If it was just a stench, it would be nothing to Zhou Nan. All he needed was a small spell to solve the problem. But this stench has a great origin. Just one sniff will leave an imprint on your body.

When Zhou Nan found out, the brand had already formed, and he could only smile bitterly and have no choice.

But the good thing is that this kind of branding just makes you smell the stench and disgust you. There is no harm for the time being, otherwise, Zhou Nan really doesn't know if he can maintain his current calmness and smile bitterly.

"Brother Zhou, it smells so bad. Bu Wan'er pinched her nose stiffly, and her face was blue.

"Bear with me, after a while, you won't smell it. Zhou Nan smiled bitterly.

After checking again and again and confirming that this stench was not harmful, Zhou Nan breathed a long sigh of relief and calmed down. Otherwise, he would not have been so sure and so indifferent to what Bu Wan'er said.

The distance of 100 miles, although because of the stench, the speed of the two was slow and slow. But for an existence like theirs, more than a hundred miles is really not far away.

Therefore, an hour later, the two of them still came to the lake.

The lake is very dark, to be precise, the water inside is very black, a hundred times blacker than ink.

The water of this lake is obviously not an ordinary thing, it is very corrosive, and the stones around it are dyed black. The potholes, one less in the east and one in the west are missing, and it looks very hideous.

Besides, with that dark color, how disgusting it is. Just after looking at it for a while, Zhou Nan frowned, knowing the source of the stench.

His thoughts drifted quickly, and after a while, Zhou Nan's expression froze, and he connected the black water with the black fog in the big pit. The same color, the same disgusting, the same corrosive, in the same place. Except that the former did not have the stench of the latter, so many coincidences came together, and it was impossible for him to doubt it.

Based on this idea, Zhou Nan's eyes flashed and he did an experiment.

Standing by the lake, Zhou Nan struck a magic duel, rolling up a fist-sized cloud of black water. The black water is very corrosive, wrapped in mana, and it is not restless. After a while, he was stunned and consumed Zhou Nan Yicheng's mana.

There was a slight difference in his heart, and Zhou Nan didn't dare to stay. He opened his mouth and spat out a spiritual fire, enveloping the black water.

The temperature of the spiritual fire was very high, and after a while, the black water was burned with a 'zzi' sound, and bubbles bubbled.

As the temperature continues to rise, the black water begins to boil. After a while, after all the black water had been evaporated, a huge black mist of more than ten zhang appeared in the field of vision, as if it was alive, constantly squirming.

Such a familiar scene, such a familiar scene, it is easy to verify Zhou Nan's conclusion.

"Hmph, I didn't expect that the source of those strange pits was here. Zhou Nan stepped aside and muttered.

Although Bu Wan'er didn't understand what Zhou Nan was doing, she was not a fool. How could you not recognize such a familiar black fog?

Therefore, as soon as Zhou Nan made the black fog, she opened her mouth wide, and her face was full of shock and surprise.

"Brother Zhou, is this black water those black mist?" Bu Wan'er pursed her lips and asked with a dry throat.

Hearing this, Zhou Nan nodded first, then frowned, and said quickly, "This black water is black mist." It's just that when this thing is black water, the corrosiveness is not as strong as the black mist. And it turned into a black mist, and the corrosiveness has increased more than ten times, so don't touch it. ”

"What about the entrance to the third floor?" Cloth Girl rolled her eyes and asked the crucial question.

"In the water. Zhou Nan didn't think about it, so he said with a solemn expression.

"What, in the water, and how do we get in?" said Bu Wan'er, again in surprise. There have been a lot of things that have happened recently, and there have been a lot of strange things she has encountered, even if she has cultivated to a great progress, but subconsciously, she still relies on Zhou Nan.

"I don't know what to do. But, hehe, I think somebody will know. Zhou Nan shook his head, then turned around again, his head was on the side of a big stone, the corners of his mouth lifted, and he said lightly, "Brother Li, what do you say?"

Listening to Zhou Nan's nonsensical words, Bu Wan'er couldn't help but be a little stunned. She really couldn't imagine that in this place where the light was not slipping, there were other people hiding, even with her barbarian cultivation, she couldn't notice it at all. Could it be that Zhou Nan was wrong? Of course, this is impossible.

So there is only one question left, that is, she is still too weak.

Ignoring what Bu Wan'er was thinking, looking at the stone that still didn't react, after a while, Zhou Nan's expression turned cold, and he shouted, "Brother Li, if you don't come out again, you will be forced to invite you." ”

When the words fell, he smiled sarcastically, and without waiting for the other party to react, he waved his sleeves, and with a wave of mana, he set off a large piece of black water and rolled towards the big stone.

Seeing the black water coming, the big stone finally moved, like a long leg, and at the last moment, it avoided the attack of the black water and quickly flashed to the side. (To be continued......)