The underwater situation was almost unpredictable, and Cheng Yongwu and his team had advanced almost half the distance when they entered the cave for nearly four hours. And as their stamina decreases, their attention is not as focused as they were at the beginning, and the rest of the exploration process will be more difficult.

Zhang Changgong looked at the map on his arm, because the signal underground began to weaken, the penetration of the satellite signal was not good, so it was impossible to calculate and predict the road ahead with the help of the computer on the satellite, and they could only rely on their own hands to figure it out.

But halfway through the time, they were still searching in the underground waterways. This underground cave is really large, covering the entire underground space. The waterways in it extend in all directions, and many of them are dead ends. Although they had tried to follow the right direction, the shape of the cave would not take care of them.

The most effective information they seek in the cave is the direction of the water around them. Feel the direction of the water, and the water that leads to the exit must be flowing in the right direction. However, the characteristics of the water flow caused by the special topography still make the situation difficult to understand, and the so-called turbulent undercurrents are nothing more than that.

Seeing that a fork in the road was induced, Zhang Changgong and Cheng Yongwu glanced at each other, both feeling a little helpless. Many of these branch openings are strangely shaped, and they cannot be guessed by common sense at all. Some of the openings that look like small openings may be huge cavities after passing them, and some of them are downward passages that can be turned upward.

Which road is the gateway to the outside? It's up to you to judge. According to the old rules, Zhang Longbow came to the entrance of the rightmost passage, and gently exhaled a breath from the corner of his mouth, and the bubbles suddenly appeared around him, rising rapidly, and looked white and strange in the light of the headlamp.

The bubbles slowly rose upwards and drifted towards the hole with the action of the water. Zhang Changgong did not rush to make a judgment, but went to the middle hole again, and exhaled again. This time, the bubbles were carried by the current of water and poured into the hole at a much faster rate, and they were constantly changing shape due to the squeezing of the water.

Came to the leftmost hole again, this hole is directly down, the bubble has appeared in this hole, and they fly frantically in the direction of the hole, they don't react, the bubble turns in a circle and disappears into the hole.

Such a situation is very difficult for them to judge.

Before, they had encountered the entrance to the cave leading directly to the bottom, and the speed of the water pouring into it was very fast, but when they entered, they encountered an underground dark river on the way, and the water was so turbulent that it was not at all like a river connecting two pools, and it almost took them all away.

If it weren't for the enough thrust of the diving equipment on their bodies, and they would have been enough to wake up, I am afraid that a few people would have to be taken away in the underground river. Now, I have encountered such a hole again, do you want to go down and have a look? Several people were silent, looking at each other's faces, all of them didn't know what to do.

Zhang Changgong thought about it and made a gesture, meaning that I will go down and have a look, and you will wait on it. But Cheng Yongwu stopped him and asked the two of them to go down together. Zhang Longbow nodded, and the two of them went down the deep hole to the deep hole, and several people outside put ropes on their bodies and fixed them outside.

The two of them descended the cave, passed through the winding passage, and went down for about ten minutes before the surrounding water pressure began to react to them. Even with cultivation on his body, Zhang Changgong still felt that his breathing was dull, and his body began to feel heavy.

It didn't take long for the two of them to hear the familiar "boom", the sound of crashing in the underground waterway. Violent currents of water are constantly hitting the rocks underground, making such loud noises when there are cavities on the periphery of the rocks, such as caves or cracks.

It seems that this is an underground river again, Cheng Yongwu stretched out his hand and grabbed Zhang Longbow, signaling that it was time to go up. But Zhang Changgong grabbed Cheng Yongwu, who was about to turn around, with his backhand, and stretched out his hand to point below. The headlamps of the two men shone in one direction, and they saw that at the junction of the cave entrance and the underground river, a strange thing was struggling.

It's a strange creature, it looks a bit like a baby fish, but it's not bare, it's a shell-like carapace, and if you don't look at the head, it's a bit like a pangolin. On its cheeks, each with a few long whiskers, fluttering with the current.

This thing is about half a meter long, has no claws, and does not seem to have teeth in its mouth, so it should not be a ferocious carnivorous aquatic creature. But most importantly, this thing comes with eyes. And when he felt the light coming, he obviously looked up at Zhang Longbow and them, as if he was crying for help.

The two of them were overjoyed!

If this thing does react to light, it is not an underground aquatic creature, that is, it itself lives in waters with sunlight. And this area has access to surface waters, and apparently the most likely is the outlet they want!

Thinking of this, the two of them glanced at each other, and they both saw the surprise in each other's eyes. Zhang Changgong handed over the rope on his body to Cheng Yongwu. Cheng Yongwu made a circle on the smooth rock next to him, slowly lowering his longbow, carefully approaching the turbulent water at the entrance of the cave.

Zhang Longbow dived with difficulty, trying to stabilize his body. The submersible thrusters they carry, both of which are powered backwards and cannot control the direction, require the diver's own body to adjust if they want to change direction. Or simple side-to-side steering, which can be carried out by the two-handed controller outputting different thrust.

But in such a situation now, the thrusters have no effect. The water flow of the underground river is extremely fast, creating a huge pressure difference at the location of the cave entrance, making the water flow at the cave entrance abnormal and almost random circles. Zhang Longbow carried a rope on his body, fixed his body on the rock wall, and carefully approached the position of the cave entrance.

Seeing someone coming down, the lizard-like creature was also pleasantly surprised, and its tail kept wagging its tail. It didn't know how it got to this place, it was probably swept to the mouth of the cave by the current, but fortunately it grabbed a relatively large rock next to it, otherwise it didn't know how many pieces it had been broken into by the current.

Zhang Longbow wrapped the rope on his body around a rock, borrowed some strength, stood carefully on the rock wall, stretched out his hand, and finally held this thing in his arms. The little thing was very happy, and opened its mouth to make a strange cry, and it was also a little miraculous that it could happen through the flow of water.

Zhang Longbow pulled the rope at this time, so Cheng Yongwu began to pull Zhang Longbow back on it. Once out of the chaotic area at the entrance of the cave, Zhang Longbow can also activate his own thrusters. The little one happily circled around him, swimming at a speed that was not slow, and was very flexible, and it seemed that the carapace did not affect its athleticism.

Zhang Longbow didn't know if it could understand, so he stretched out his hand and pointed to the outside of the hole, but he didn't expect it to understand, and began to take the lead and swim out. The two men were afraid that it would run away like this, so they followed closely behind and watched over it. Whether you can get out of this hellish place depends on it!

After getting out of the hole, the team members guarding outside first breathed a sigh of relief, and then they were a little surprised. Why did they just bring one...... Pangolin? Where did the pangolins come from? What a hell!

Zhang Changgong couldn't explain to them, now they only had a little more than three hours left, and if they couldn't find their way out, everyone would have to die. It would definitely not be possible for them to figure it out on their own, the level of complexity here was beyond their ability level, and now they could only try their luck.

He tried to communicate with the little one, pointing to the other two holes and then to the top, trying to make the little one understand their intentions. Unexpectedly, the little one looked at the two holes, obviously confused, but turned back to the same way they came.

Zhang Longbow spread his hands, thinking that maybe their luck was terrible. The others also saw Zhang Changgong and Cheng Yongwu's thoughts, and they were a little expectant at first, but they didn't expect this little guy to go back, and they couldn't help but be a little disappointed, watching the pangolin leave, they didn't move.

But the little one swam some distance forward, but stopped and looked back, as if puzzled. Looking at the people behind him, it came back again, swam behind the longbow, and walked out with its head on him. Zhang Changgong was stunned for a moment, pointed behind him, and then pointed to the top.

The little one's eyes were full of confusion, and he still led them back. Zhang Changgong was a little helpless, this little guy wouldn't be planning to take them back to the place they came in before, right? I guess I don't have enough time to go back now.

But do they have any other options now? He looked at Cheng Yongwu, and Cheng Yongwu also nodded. If they could really go back to the waterfall they came in, it would be better than suffocating down there, and maybe the little guy would lead the way, and the way back would be much faster?

So several people glanced at each other, and they all followed the little one.

Surprisingly, however, the little one did not return the same way with them, but after passing through three forks, he turned around and drilled into a hole that they had given up and had no choice for. Zhang Longbow's eyes lit up, and he entered the cave right after, and the other teammates also rushed in.

The rest of the way, the little guy led the way, Zhang Longbow and they continued to move forward, and it didn't take long for the water around them to suddenly become a little faster. Only then did he realize that the activity of the underground water flow was not a simple matter of flow rate at all.

It's a miracle that they've been able to touch it like they've done before. Obviously, the water flow at the entrance of some caves is not very fast, but the seventh step in it will have to be explained separately. It depends on the size of the hole and the shape of the passage, and their headlights are too small to get a full view, so judgment must be affected.

The little one led the way, and after about an hour of swimming, they finally felt a calm current, and the water temperature around them began to drop a lot. Zhang Changgong and they knew that this was obviously the position of the exit, and the water temperature on the ground was affected by the temperature of the outside world.

Also feeling the change in water temperature, the little guy stopped in front and didn't leave. Zhang Changgong knew that this little guy must have come to the underground river to spend the winter. So he stopped, not knowing how to thank it, so he took out two measuring sticks from his bag and put them in its mouth.

The little guy swam to his side, put his head on his goggles and rubbed them, after rubbing them, it seemed that he was disgusted that the reinforced plastic of the goggles was too hard and slippery, and turned around a little arrogantly, and drilled into a small hole next to the waterway, which was probably the little one's own home.

Looking back at the position at the entrance of the cave, Zhang Longbow raised his hand and waved, the little guy was confused for a moment, and also raised a short webbed claw and waved. Only then did the eight of them turn around and walk in the direction of the exit, and it didn't take long for them to see a faint light.

Coming out of the cave, they saw a sandy area and fish swimming around, and they all breathed a sigh of relief and began to rush upward, and it didn't take long to see the thick ice and the faint moonlight on the ice. Several people were ecstatic and immediately took out the ice picks in their bags.

Three small holes were made in the ice in the shape of an equilateral triangle, and each of the three men took out a small rod and stuffed it into the three holes. The lower part of the rod is then opened, and the lake water enters the rod and quickly reacts with the chemicals inside.

The three rods swelled up in the middle of the narrow hole, and as the hole was tightened, the expansion continued, and then there was a "click" sound on the ice. With the force of the squeezing, the triangular area suddenly shattered and turned into several pieces.

The ice on the surface of the lake is already under its own pressure, and when the water freezes into ice, the volume will expand rapidly, and on the limited surface of the lake, it is inevitable that the edge will freeze first. The inner ice can even break off on its own as the ice gets thicker. With the influence of an external force, a small expansion force can form a huge destruction.

Cheng Yongwu took the lead, poked his head out of the broken ice first, carefully observed the surrounding situation, and found that they were close to the southwest of the entire lake, and the surroundings were unusually quiet, without any thermal reaction. So he lowered his head, made a safe gesture to the people below, and went up to the ice first.

After staying underwater for nearly six hours, Cheng Yongwu felt a little dizzy and extremely uncomfortable after coming ashore. The energy swirled around the meridians, and he reached out and picked up the gun behind his back, guarding his surroundings. Immediately after, they also crawled out of the hole.

When everyone had come out of the cave, several people looked at each other, quickly left the lake, entered the bushes on the shore, and found a hidden place, and then sat down and took turns to rest. The energy furnace connected to the inner lining of the body should also run out of energy, and it is too much energy to keep warm in ice water for such a long time.

Several people immediately reported their itinerary with satellite communication, and took out the simple dimensional space door, and after obtaining new energy furnaces, clothes, weapons and ammunition through the dimensional channel, they sent all the original equipment that could not be used back to the empire through the channel to get things.

None of these things should be left to the alien race, this is the rule of the Empire.

Looking at the map, Cheng Yongwu said: "Continue to the northeast, and in less than half a day, we will be able to arrive at the predetermined location to prepare." This half-day and one-night time should also be the best time for us to act. The master who chased us before should have thought that we were hiding underwater, or simply thought that we were dead. ”

The others nodded their heads and began to eat and drink quickly. In such an environment, the energy bar is a little hard and tastes like a popsicle, and can only be taken with hot water. They didn't dare to eat self-heating box lunches, and they went deep behind enemy lines, and any leakage of breath could lead to the annihilation of the entire army, so they couldn't help but be careless.

After hastily finishing the energy replenishment, and each took turns to rest, Cheng Yongwu took the lead and put on the camouflage suit, and everyone blended into the bushes and snow. The team quietly moved forward in this way, and touched towards the predetermined location, and the distant Rokuzan mountain and gray smoke looked very strange.

After receiving Cheng Yongwu's communication, six hours later, the general staff in the western region also breathed a sigh of relief.

"Now, the Nameless Squad is almost the closest to the intended location, the safest environment around, and the most thorough to get rid of the enemy. According to the plan, they should be in position by tomorrow afternoon, and once they are hidden near Rokuzan, it is almost impossible to be detected thanks to our technology, just waiting for the operation to begin. ”

"What about the other squads?" Zhu He asked.

"There are also three teams in the other squad that are going cautiously and are in relatively safe condition, but the losses are even heavier, and the largest squad has only five people left. In addition to these three teams, there are two other teams that say they are observing, and they are supposed to be out of danger. The rest of the squad is still working on it. ”

"Good!" A smile finally appeared on Zhu He's face, this was the biggest good news after the start of the first battle in Lushan, and they couldn't help but be unhappy: "Notice, all parts are ready, once we start to act, we will take Lushan as quickly as possible!" ”

"Yes!"

"Also, the armed fighter units and fire cover that will transport them back must be foolproof, and these people will be our great heroes once they successfully complete the mission! Such a soldier should not be killed or injured because of any other person's mistakes, otherwise I will ask you! ”

"Yes!"

As a result, the entire western region began to act, and the western troops, which were originally in a somewhat depressed mood, began to regain their vitality. Even if a new mecha of the alien race hangs over their heads like a knife, it can't dampen their determination to win!

Zhu He looked at the Lushan Mountain in the distance, and looked at the snow on the mountainside of the Lushan Mountain, where how many of their brothers were buried. Tomorrow, as long as tomorrow, it's time for us to rush forward and take revenge! Zhu He clenched his fists, and his eyes revealed a sharp light.

And at this moment, a shadow that had disappeared for a long time became transparent again and appeared on the bed of the barracks.