As a last resort, the two had to switch to walking.

After landing on the ground, Nanli said in surprise: "It's strange, near the Mourning Dragon Trench, it seems to be wrapped in a force." ”

Yan Fei stared in the direction of the Mourning Dragon Trench and said in a deep voice, "That is the power of the Dragon Soul of the Ancient Dragon Ancestor. ”

"Tai Gu, Dragon Ancestor, Dragon Soul Power?" Nan Li glanced at Yan Fei in surprise.

Yan Fei didn't explain, and there was nothing to explain.

If the person wearing the golden armor in the Sumeru Sword Realm is himself before the reincarnation of a thousand lifetimes, then isn't the one who killed the Ancient Dragon Ancestor himself?

In the Sumeru Sword Realm, the golden armor has been broken, the divine sword is broken, and even the Dragon Ancestor can kill himself, and when he encounters some terrible existence, he will end up in such a mess.

Thinking about it further, will the reincarnation of this thousand lifetimes also be related to it?

Unconsciously, the mysteries have been faintly connected into a line.

The mountains are like a day, and the world has been a thousand years.

Turning my head, I am afraid that tens of thousands or even hundreds of thousands of years have passed, and even in the memory of my last life True Martial Sword Saint, there is no information about the Sword Slaying Dragon Ancestor in the primeval period.

If it comes, it will be safe, Yan Fei sorted out his mood and walked into the mourning dragon moat.

The mourning dragon moat is a huge ravine, as wide as 100 miles and as long as 10,000 miles.

It is full of vegetation and life.

Although the scenery along the way was good, Yan Fei did not dare to be careless.

Since the Mourning Dragon Trench is known as one of the top ten dangerous places, it must have its terrifying features, even if an ancient fierce beast pops up, it is not unusual.

"Brother Yan, are we looking for it so aimlessly?" Nan Li was on guard and asked.

"Rest assured, I can feel its presence. ”

"What do you mean?" asked Nan Li curiously.

Yan Fei's immortal sword body, the sense was by no means comparable to Nanli, and he faintly felt that there was an abnormal aura in the Mourning Dragon Trench.

This breath is not strong, but it is very advanced, containing the spirit of a king.

Yan Fei calculated, if he guessed correctly, this was the Qi of the Dragon Ancestor.

It was in the primeval period that the dragon ancestor was killed, the years have changed, the dragon body has been corrupted and disappeared, and the power of the dragon soul is still there.

It shows that the soul of the Dragon Ancestor is still there.

It's hidden in a corner of here.

What Yan Fei is doing now is to follow the feeling of the immortal sword body, and the closer he gets to the soul of the Dragon Ancestor, the stronger that abnormal aura will be.

But these are all speculations at the moment, and he doesn't want to explain too much about Nanli.

"Let's go, trust me. ”

Seeing that Yan Fei didn't want to say more, Nan Li stopped asking.

Since stepping into the Mourning Dragon Trench, Xiao Hei has become very excited.

From time to time, it burrowed into the grass, and from time to time it jumped on the ancient trees, looking around full of curiosity.

At this moment, suddenly, the little black monster squatting on Yan Fei's shoulder screamed twice.

"Squeak!" the cry was rapid, apparently a warning.

Yan Fei and Nan Li were on guard, but after some observation, they didn't find any disturbances.

After a few breaths, a fat rabbit sprang out of the grass, causing Nanli to smile helplessly.

He glanced at Xiao Hei and said, "Hey, don't be so nervous, it's just a rabbit, is it still comparable to the wind, thunder, and tiger, ice and fire two-headed wolf?" Brother Xiao Hei, this is too inconsistent with your majesty a few days ago." ”

Xiao Hei made a contemptuous gesture towards Nan Li, but he still did not relax, showing that he was facing a great enemy.

Nan Li was about to speak, Yan Fei said in a deep voice: "Brother Nan, don't relax, for the perception of danger, Xiao Hei is stronger than you and me." ”

Yan Fei's tone was extremely serious.

Nanli seemed to be a little unconvinced, but seeing that Yan Fei was on guard, he could only put the Heavenly Killing Sword in front of him and carefully observe the wind and grass around him.

At this moment, Yan Fei's soul power had already covered a hundred square feet.

He could be sure that within a radius of a hundred zhang, everything was under his control, and there was no danger, and even the immortal sword body did not feel the abnormal aura.

"Xiao Hei, this kind of joke can't be made, do you understand?" Yan Fei's tone was very serious.

Xiao Hei jumped from Yan Fei's left shoulder to his right shoulder.

"Squeak, squeak!" cries of dissatisfaction.

"Xiao Hei, it's not that I doubt you, if you have a premonition of danger, can you determine the direction?"

Xiao Hei understood Yan Fei's words, it rolled its eyes, scratched its head, looked around, looked left and right, and finally failed to point out a direction.

Seeing this, Yan Fei said in a deep voice: "Trouble, we have met a dormant master, who can avoid my observations, this thing is extraordinary." ”

Nanli glanced at Xiao Hei and asked, "You just believe in it like that?"

Yan Fei didn't answer, he had absolute trust in Xiao Hei's ability.

Seeing Yan Fei's firm face, Nan Li said with some worry: "Then we have been spending time here?" If there is really something terrible targeting us, since it does not dare to come out, it has some scruples, let's leave quickly." ”

Yan Fei snorted coldly and said, "Hmph, how can a hunter give up easily when he is eyeing his prey? If we don't get rid of this hidden danger, it's useless for us to go anywhere." ”

"So what to do, we don't even know where it is, we don't even know what it is. ”

"Brother Nan, you are right, if it doesn't move, it has scruples, and the time is not yet for it, since that's the case."

Yan Fei's voice did not fall, and Nan Li's eyes lit up.

"Understood, let's lead the snake out of the hole, if Brother Hei is not mistaken, I really want to see it. ”

Comprehending Yan Fei's meaning, Nan Li began to distance himself from Yan Fei, and on the surface, the two of them seemed a lot more relaxed.

Rao was like this, and the two continued to walk forward, but still did not find anything abnormal.

Nanli's patience has almost reached its peak.

Yan Fei's heart was full of consternation.

"A terrible opponent not only knows how to hide himself, but also has super endurance, and if he doesn't do it, it must be a great opportunity to get a good shot. ”

But what kind of opportunity is it waiting for? What is it, that it can hide itself so perfectly, so powerfully, really amazingly.

Yan Fei's heart was more or less irritable, but he still forced himself to calm down.

After walking another two miles, Nanli couldn't help it.

He stopped, turned around, and looked at Yan Fei helplessly.

"I said Brother Yan, are we too "

Before the words landed, at this moment, Yan Fei's expression changed greatly.

"Brother Nan, be careful. A loud roar came out of Yan Fei's mouth, and at this moment, a gray-white shadow burst out of the grass behind Nan Li.

The grass was more than ten zhang away from Nanli, but the gray-white shadow was extremely fast, like a ghost, silently, when Nanli came back to his senses, he didn't even see what was rushing towards him, and a thick murderous aura mixed with bloody aura had arrived in front of him.

"Squeak, squeak. At the same time as Yan Fei shouted, the little black monster screamed twice, and he stood up on Yan Fei's shoulder, a pair of small eyes were round, and his face was full of surprise.