After a slight adjustment, the three of them continued on their way.

At the bottom of the abyss is a long and narrow river channel, flanked by steep cliffs that cannot be seen at the top, giving the impression of walking in the middle of a line of sky.

"Du Bureau! Flower Bureau! We are one step away from the secret realm, as long as we walk out of this river, we will be in the secret realm. Li Da looked at the map as he walked.

The river has dried up, and there are still traces of the river's past erosion on the surface, as well as white bones, but judging from the skeleton, most of them are wild beasts and unknown creatures.

The three of them walked for more than two hours, but there was still no end in sight, as if the river could not go out at all.

"Something is wrong. Du Yun suddenly stopped, looked at the surrounding environment and said, "We have walked through here." ”

Hua Xueyue and Li Da looked confused.

"No way! We've been moving forward, and the sight of this river is very similar, maybe you are mistaken. Hua Xueyue said.

Du Yun shook his head, and his tone was firm: "We must have walked here, and there are marks I left on the rock wall." ”

Hua Xueyue and Li Da followed the direction of Du Yun's finger and saw a triangular pattern mark, and their cognition collapsed instantly, what is going on?

"I see! This canyon is not straight, but a huge circle. Du Yun's eyes lit up.

Hua Xueyue and Li Da felt incredible, from beginning to end, they subconsciously believed that the cliff was a straight line, dividing the island into two halves.

"If it's round, we should have seen it when we were standing in the forest belt before. Hua Xueyue was puzzled.

Du Yun shook his head: "The light in the forest is dim, and the range of our vision is limited, and we feel that the canyon is a straight line, but in fact, this ground fissure is centered on the center of the island, and a circular canyon is expanded." ”

Du Yun's analysis gradually convinced the two, and as a result, everyone's thinking direction changed.

Li Da said: "If it's a crater, it doesn't make sense, according to the map marking, the secret realm is in the abyss, but we have turned the canyon around a whole circle, and we haven't even seen the shadow of the secret realm." ”

Hua Xueyue nodded, this is also what she can't figure out.

Du Yun actually thought of this a long time ago, and there were several explanations, and finally he used the elimination method to eliminate them one by one, and got the most reliable explanation.

"The secret realm is in the abyss, but it will not be easily discovered, it should be opened with a hidden mechanism, otherwise many people will find the secret realm. ”

Hua Xueyue's eyes lit up: "After hearing about the white dragon seniors, no one has ever found the secret realm in the eighteenth area, it seems that the secret realm really needs to be cracked to open the secret realm." ”

After the brainstorming of the three of them, the truth has gradually surfaced, and now the only thing to do is to find the mechanism to open the secret realm, but this canyon is dark and huge, and it is not easy to find the mechanism.

There was no better way for a while, and the three of them could only try their luck as they walked.

When they returned to the triangular mark marked by Du Yun, the three of them had already turned the river twice, but they still found nothing.

"No! I don't have enough time to look for it in such a headless and mindless way. Hua Xueyue stopped, her eyebrows furrowed.

This time, the time limit for the expansion of the enrollment quota is 24 hours, and it has been almost twelve hours since the three of them entered the eighteenth area, especially after entering the abyss, they have been delayed for five or six hours and have done nothing.

"Anyway, we have found the abyss, now go up first and continue to catch ghosts, and then come down to find the secret realm. Du Yun made a decision.

Hua Xueyue agreed, Li Da was a little unwilling, but since they were all subordinate to the Jiangcheng Spiritual Bureau, he could only obey the order and listen to the command.

But when the three of them were about to climb back, they were suddenly confused.

I don't know how high this abyss is, it's easy to jump down, but it's hard to climb up.

"Oops! We seem to be trapped in this. Hua Xueyue looked sad.

Du Yun was also anxious, he patronized and came down to hunt for treasure just now, but he forgot to leave a way back for himself, and now he is really trapped in a desperate situation, with no exit and no way back.

At this time, the three of them were physically and mentally exhausted, and they each sat on the edge of the rock wall, their eyes dimmed. Du Yun picked up the map and looked at it carefully, trying to find a way to break the game, but after a long time, his eyes lit up and he jumped up from the ground suddenly.

"I see!"

Hua Xueyue and Li Da were frightened by his startled move, and Hua Xueyue asked, "What do you know?"

"I know where the secret is. ”

The expressions of the two changed greatly, and they looked at Du Yun with anticipation.

Du Yun continued: "According to the annotation of the map, the secret realm is where we found the abyss, but the map is flat, and there is no way to mark the depth, so according to my judgment, the secret realm is where we first jumped off the abyss. ”

Hua Xueyue and Li Da were stunned, this wave of analysis was reasonable and well-founded, and completely convinced the hearts of the two.

"So what are you waiting for, let's get back to square one. Hua Xueyue said eagerly.

The three of them began to walk back, and after half an hour, they came to the place where they had first jumped into the abyss. The environment here is similar to the entire abyss, and there is nothing unique about it on the surface.

"Scan it with a sonde. Du Yun said.

Hua Xueyue looked depressed, her equipment was all thrown away by Du Yun, and now she was carrying half a bag of spirit grass. Fortunately, Li Da's equipment was still there, and he soon took out several instruments with detection functions from his bag.

After some exploration, the location was finally determined, under a very inconspicuous rock wall in the canyon, the aura inside fluctuated abnormally, and when the dust on the ground was swept away, a circular groove was revealed.

"What is this?" Hua Xueyue and Li Da couldn't understand.

"It should be the energy gauge that activates the formation. Du Yun is just guessing.

The three of them were depressed at this time, none of them understood the formation, which was a very small number of mysterious sects in the Heavenly Alliance.

"Looks like we can't get into the secret realm. Hua Xueyue sighed, this felt very embarrassing, she finally found the entrance to the formation of the secret realm, but she didn't know how to open the formation.

Li Da tried to slap a wave of aura into the circular groove, and the groove emitted a faint light, and then fell into darkness again.

"There you have it! I think you need to input enough spiritual source into the groove, and then you can open the secret realm. Li Da seemed to have discovered a new world, and his face was red with excitement.

Du Yun and Hua Xueyue also saw the clues, so the three of them worked at the same time, and kept slapping the aura into the groove.

The groove flickered again, and the brightness increased, but after persisting for more than ten minutes, the gate of the secret realm still did not appear, and the aura in Du Yun's three bodies had been seriously depleted.

"Stop, it's not going to work. Du Yun took the lead in withdrawing: "It seems that the spiritual source needed by the energy tank is far greater than we imagined. ”

Hua Xueyue and Li Da also stopped, looking helpless, everyone had tried their best, but it was still to no avail.

At this time, Du Yun took out a handful of black beads from his body, these are the dark stones he took from the Terracotta Warriors and Horses Pit of Qin Shi Huang, these dark stones were originally the energy stones that provided the Terracotta Warriors and Horses Pit Spirit Gathering Great Array, maybe they could also operate the secret realm formation here.

"Du Yun, what are you taking?" Hua Xueyue looked curious.

Without explanation, Du Yun threw more than a dozen spirit stones into the circular groove, and after a while, a dazzling light radiated from the energy groove, and the three of them were about to lose their eyes.

Thundered!

There was a loud bang in my ears.

The three of them were so frightened that they immediately retreated, and soon, Hua Xueyue screamed: "Look! The rock wall has moved, as if it is a hidden array gate." ”

In the sight of the three of them, the rock wall above the groove cracked and slowly moved upward, as if a door to a new world was opened. But before the three of them could get excited, the stone gate suddenly stopped, and the light in the groove disappeared and returned to its original state.

"Why did you stop? It's only a 10-centimeter slit, and we can't climb in." Li Da looked depressed.

Du Yun had no choice but to take out a handful of dark stones from his body and throw them into the groove, and at the same time his heart was dripping blood, he took a total of ninety-nine dark stones from the terracotta pit, each of which was a life-saving hole card, and now he squandered it one by one, which was too capricious.

When the stone was thrown in, the groove flashed again, and the stone gate slowly rose, making a huge movement, as if the cliff on that side was about to collapse at any moment.

After more than ten seconds, the stone gate stopped again, but Du Yun did not continue to throw the dark stone into the groove, because the gap that was now open was barely enough for people to climb into.

"Let's go. Du Yun said.

Hua Xueyue and Li Da looked at him strangely.

"What's wrong?" Du Yun was puzzled.

Hua Xueyue said, "Have you run out of stones?"

"It's a little bit. ”

"Then why don't you keep throwing it inside? How cool it is for us to swagger in, this little half of the door is drilled for dogs. Hua Xueyue raised her eyebrows and said.

Du Yun's face darkened, did you think the Immortal Stone fell from the sky?

"If you don't climb, I'll crawl. ”

The big husband can bend and stretch.

Du Yun had already walked to the stone gate, then lay on the ground and crawled in under the surprised gazes of Hua Xueyue and Li Da.

Soon, Du Yun disappeared.

Hua Xueyue and Li Da suddenly had no master, and before they knew it, Du Yun had become the backbone of their hearts.

"What are we going to do?"

"! Climb in. Hua Xueyue said.

"But Director Hua just said that it was drilled for dogs. ”

Hua Xueyue's teeth itched, and she scolded: "Idiot! Can we call this crawling? ”

A few seconds later, Hua Xueyue also crawled towards the stone gate, but she got stuck halfway through, mainly because some parts were overdeveloped and became cumbersome.

Li Da, who was crawling later, had already caught up with her, and looked at Hua Xueyue, who was lying still in place, very strange: "Director Hua, are you waiting for me?"

"I'll wait for your uncle!" Hua Xueyue said angrily.

"My uncle died a few years ago. Li Da's expression was serious.

Hua Xueyue: "......"

"That Director Hua, am I going to wait for you, or do I climb in first?" Li Da didn't know what to do.

Hua Xueyue's angry shout sounded in her ears: "You climb you! ”

Li Da was so frightened that he accelerated his crawling, and complained again and again in his heart: "Is Director Hua coming to relatives? ”