Although Chen Kai and the others knew that the surrounding demons were very strong patrol, Chen Kai and the others still rushed in. After hiding into the hole dug by Fei Yun and the others, everyone's heartbeat was definitely more than 180 miles, and their high-speed hearts seemed to jump out of their chests. However, after entering the safe hole, everyone's hearts relaxed a lot, and the tense nerves instantly loosened the result was that everyone was slumped on the ground and unable to move. The result of this muscle relaxation and fatigue similar to the high-tension exercise was that everyone's physical strength almost dropped half in an instant, because they were all tired.

"nnd, this is probably the first time I've been running so fast in the game and I'm still running!" Chen Kai lay directly on the cold ground, gasping heavily, and lying beside him were Zhao Tiezhu and Su Xinghe, who were also tired, while Fei Yun and his thieves were constantly responding to other rushing companions on it while alerting the surrounding situation. When the last player staggered and rolled into the hole and rolled into the hole and rolled together with the others, Fei Yun and the others left and waved the soil to seal the hole and left only a few made pipes as ventilation openings.

"Don't say! You run so fast. I guess only that guy Lu Xiaofeng is a little faster than you!" Zhao Tiezhu said gasping on the ground. In the last distance from the hiding place, almost everyone used the running skills at the bottom of the box. Whether it was Chen Kai's magical body step or the Blood Sea Peak and their death magical step, they were used without any tolerance, but they were still a little worse than Lu Xiaofeng, who was best at running. At least before they rushed into the hole, the other party still rolled in and hid in.

"It's not just a little faster, it's much faster, okay!" Chen Kai was very clear about Lu Xiaofeng's final speed. The terrible highway that was almost nearly shrinking into an inch was definitely more than a little faster than Chen Kai in a short distance sprint. If it weren't for the lack of endurance, Chen Kai would probably be thrown by the other party.

"Okay! Don't discuss who runs faster and who runs slower, let's think about how to go? After being run wildly without any cover, you are like a large group of people. I guess the whole wilderness is covered with human footprints. If those footprints are discovered by the demon, we will shrink below this for several days!" Dark Dagger sighed and said, although he knew that if Chen Kai and the others did not sprint at high speed, the chance of meeting the demon would be higher.

"What else can we do? Let's dig the tunnel directly! Dig a kilometer a day and ten days and a half months will definitely dig under the Demon Gate!" Xue Haifeng stood up and said with a panting breath. In fact, although his idea is rather bad, it is not a solution. Of course, this method is absolutely useless and costly and is very unreliable. If you accidentally dig in the deep underground, it will collapse landslide and everyone will be buried alive. Even if you are lucky and don't encounter landslides, it is a huge problem to distinguish the direction underground. The worst thing is that after digging for a long time, not only will you not get close to the Demon Gate but will dig farther and farther away. At that time, you don't even cry.

However, although the underground excavation path cannot be used to directly access the Demon Gate, it can be used to temporarily stagger the time to meet the Demon Patrolmen. As long as Chen Kai and the others are ready, dig a distance towards the Demon Gate in a straight direction to stagger the Demon Gate, and then take advantage of the night to appear in the wilderness to determine the location before digging the tunnel. As long as there is enough time, they can avoid the patrol range of the Demon Gate and enter the core area of ​​the Demon Gate.

Of course, this is definitely a terrible project. Although the underground soil is formed after the silt in the swamp is sucked away by water, most of them are blocked. Just dig it lightly and you can dig out a large piece of project speed. However, the direct softness of the upper and lower soil is different. If you are not prepared, once the soil layer above collapses, then there will definitely be no one who dies. Therefore, Chen Kai and others use the solid soil dug like bricks and wet it with water and then build it in the tunnel. Although it may not necessarily have solid stones, it always feels a little safe.

After he had formulated the mole-like action method of digging tunnels, Chen Kai and others devoted themselves to this relatively large project, using the cover of the night to dig nearly 200 people in the underground space. After Chen Kai and his friends dug for a night, terrifying roars came from the top of their heads. The demons found Chen Kai and his friends' footprints and began to work hard to create craters in the wilderness again. A large amount of mud and sand were shaken off from above the pit by the earth, making Chen Kai and the others nervous.

At this time, most people stopped working, but only a few people were working hard to dig the passage. The players who stopped digging did not relax, but tried to pile up blocks of soil and wood in the underground space to support the soil layer above. Obviously, Chen Kai and the others found that this time the demon seemed to be really serious. The intensity of the attack was absolutely terrifying. When the first block of soil fell from Chen Kai and the others' heads, no one thought that the underground space would be safe, so everyone tried to use wooden boards and wood to support the loose soil layer.

The constantly shaking ground made this originally simple job extremely troublesome, and the constant roars made people more and more frightened. They seemed to be able to see the entire ground collapsed and buried them alive. However, after struggling for nearly half an hour, all the roars disappeared, and only the shimmer crystal that fell to the ground was still trying to emit a faint light to illuminate Chen Kai and the others' embarrassed faces.

"Are they leaving?" Chen Kai turned his stiff head and asked Fan Krie next to him. His back was tightly against a wooden board. Another terrible crack line on the board was almost about to crack into several sections, but because Chen Kai was pressing against it, the wooden board did not completely break and still tenaciously supported the earth wall behind.

"I don't know! But we should be safe for the time being. Let's work hard to strengthen the surrounding earth wall~!" Van Kerry was exhausted at this moment. He supported a wooden board with his hands. The height of the entire underground space was only less than two meters. He supported the wooden board with his hands. The upper layer of the underground space was supported by the upper layer of the underground space. Although there was a large amount of wood as a pillar, the collapse of the soil still existed, so Van Kerry and the others needed to use their bodies as pillars and wood to support the ceiling.

At this time, a huge vibration suddenly came from the ground in the distance, and it felt like a huge rock hitting the ground. This vibration on the ground may at most make people shake their feet, but it is extremely clearly reflected in everyone's feelings underground. The feeling of mud and sand makes people feel whether the underground space will collapse under this vibration.

"Will the rock camp we dug be discovered?" Chen Kai turned his stiff neck and asked Zhao Tiezhu and Su Xinghe beside him. One of them supported the sky with both hands and Fan Kerry to the ceiling above his head. The other was like Chen Kai with his body against the earth wall that was about to collapse behind him.

"It's possible! But the vibration shouldn't be so violent!" Su Xinghe said with a frown, because he felt that even if the camp in front of them was found to collapse, it would not produce such a terrible vibration. This vibration was like a terrible impact caused by a giant while trying to hit the ground.

In fact, what existed above Chen Kai and his team was not a giant, but a terrifying creature comparable to a giant, a Bis beast with a body length of more than 30 meters. What caused the terrifying tremor on the ground was nothing else. It was the earthquake released by the Bis beast with the two horns of the demon. The terrifying earthquake waves spread out the moment its legs landed on the ground, creating an effect similar to an earthquake on the ground. The wave range was as high as hundreds of meters. Chen Kai and his team were unlucky that they were within the diffusion range of this earthquake wave, so they felt a terrifying tremor like an earthquake of magnitude 7 or 8. If they hadn't relaxed their vigilance and tried hard to support the soil and walls, it would probably be completely destroyed by one blow.

After this earthquake wave, the Bis monster released a terrifying earthquake wave every time it was broken, allowing Chen Kai and the others to experience the terrifying feeling of the earthquake. The ground under their feet cracked under this earthquake fluctuation. This terrible vibration lasted for nearly ten minutes before gradually disappearing from Chen Kai and the others' perception. After the vibration disappeared, everyone was so tired that they wanted to lie down, but they forced themselves not to lie down. Those players who did not participate in supporting the wall worked hard to repair the soil layer, and then built several tall earth pillars to hold the ceiling.

"It's finally over. If it doesn't end, I'll exhaust myself if I don't need a demon to clean up!" Fei Yun, who was slumped on the ground, said panting. In fact, not only him, but also the same. After confirming safety, everyone was slumped and tried hard to eat and recover their physical strength. At this moment, they had a deeper understanding of the demon's strength. It was absolutely a terrible existence to be able to penetrate the strata of three meters thick and make the soil layer below produce violent fluctuations like an earthquake.

"Yes! I hope this is the only one!" Su Xinghe said biting the dry and hard jerky. Everyone fell into silence as he listened to his words. The dusty face exuded a depressed and lonely mood under the illumination of the glimmer crystal. At this moment, they found how difficult and endless difficulties the road they chose to complete the task appeared in front of them one by one, which made everyone have the intention to give up.

"What's wrong? What's wrong? Isn't this the difficulty? Don't forget that even if we quit the task now, it's basically overcomplete. The distance we are exploring now exceeds the fortress commander's imagination. As long as we return, we hand over the collected information back, even if we quit, we will definitely be able to complete the task. Now we are just overcomplete the system's tasks and increase the trial rewards. Why are you dejected? "The dark dagger looked at the others through the dim glimmer crystal and began to cheer them up.

"But Dark Head, how do you believe that our mission will be completed after being hung back? After all, the task requirement is that we will bring back the information we get alive!" A thief obviously disagreed with Dark Dagger's opinion. He used the task explanation to refute Dagger's words, but in fact, others thought the same.

"So what do you think of now? Go back? Don't joke. The demons outside searched for our trails almost like crazy. We made trouble like this twice. I guess the patrol intensity of the outer layer is almost the same as the core! Now walking out is basically looking for death. It's better to rush inside. After all, the system's task is the most special. Who knows if you will directly activate the completion mode and enter the special link!" Tzai said with his remaining arm, waving the shovel. Although his words are not particularly impressive, they also represent a fact. Chen Kai and Zhao Tiezhu did not hand in the task and completed the trial directly, because they belong to the type of person who completed the task more than a certain amount.

"...Are you sure we can survive until the step of completing the task and completing the trial directly?" A thief didn't believe T's words, because he thought it was too difficult and difficult. If he wanted to complete the task more than it would definitely need to rush into the core area of ​​the Demon Gate. Now the outer area is just so terrifying, God knows what will exist in the core area.

"I'm sure, of course, the premise is to dig one hundred meters per hour from now on!" Tzai nodded seriously, and with his black but extremely sincere face, everyone had some trust in his words.

After a period of rest, most people started a new round of work after recovering their physical strength. Although others did not believe T-Zai's words, they temporarily could not find a reason to argue and did not have the courage to escape the devil's pursuit after leaving the team. They could only mix in the team and dig the holes. The deep caves continued to dig to the north with the efforts of Chen Kai and the others. After Chen Kai and the others dug nearly a kilometer, the rock camp that they originally regarded as coordinates disappeared from the map after a flash. Although Chen Kai and the others didn't know what happened, it was clear that the camp had been erased from the map, and the one who did the trick was definitely the one who created the earthquake wave.

"We must speed up. If those demons don't find our bodies under the rock camp, they will probably go back and search the top of our heads again! But there should be a little time, after all, they don't know where we are hiding?" Chen Kai touched his head and closed the system map. Since they were all underground, the orientation on the system map has not changed. Only after leaving the underground will they regain new coordinates and locations to determine the orientation. Especially after the coordinates of the rock camp disappear, it becomes more difficult to determine the direction. There is only the general environment around the system map but no north-south direction. All information must be mastered by players relying on the things in the game. Chen Kai and the others have no way to determine the direction of the direction of the spell. Originally, they could use the rock camp as coordinates to determine the direction of the direction of the excavation.

Everyone knows that there is not much time left for them. Once the demons react and come back to release the earthquake waves, the underground space, which is no longer human, will definitely be shaken instantly. At that time, they will lose the second coordinate point and can only touch it like a blind man in the dark ground. Therefore, in order to prevent it, Chen Kai had to separate some people to dig a new camp underground, a small cave less than ten square meters smaller. The camp can only accommodate one tent, and everyone can only take turns to go offline to ensure that the camp is not crowded. However, this small cave is very strong, at least much more seismic than the original camp.

The walls of the camp were built with all the rocks dug out by Chen Kai and others, and each rock was directly bonded with wet mud and fixed with wooden boards and embedded in the earth wall. Although the solidity of such rocks and earth walls is not as strong as concrete brick walls, it is much stronger than ordinary earth walls. Of course, this kind of sturdiness is also relative. If the front is affected by earthquake waves, it will definitely collapse, and even if Chen Kai and others use wooden pillars to support it, it will be useless. Even so, this camp is very important to Chen Kai, because it is an important oxygen supply point. There is a vent excavation vent on it that was dug out by Chen Kai and others. A large amount of air is transported through the gaps under the rock above, and at the same time, Chen Kai and others can confirm the direction and continue to dig to the north.

Chen Kai and the others took turns to work. Everyone had enough rest time. The authentic working face could accommodate three people to dig, while the others put the soil in their backpacks and transported it to the original underground space to pour it into the original underground space, so that it gradually submerged in the soil to destroy the remains of their activities there. At the same time, they kept blocking the tunnel behind, forming a path blocked in front and behind excavation underground. Of course, this path was blocked very loosely and could be dug up again at any time. This was actually the retreat left by Chen Kai and the others for themselves. Although the retreat path was not very long and even the exit was within the control of the demon, it was an absolute life path.

During this time of digging and burying, Chen Kai and the others spent nearly eight days underground. At the same time, they really entered the hinterland of the Demon Gate. Because they dug nearly two kilometers of tunnels every day, they kept sleepless work. Everyone was extremely exhausted but extremely excited. Because he was less than twenty kilometers away from the Demon Gate at this moment, he could see the huge black terrifying gate standing in the sky in the distance. At the same time, he could also see the two terrifying black fire pillars rising into the sky on both sides of the door. The huge pillars of fire illuminated everything around him like two black light sources.
Chapter completed!