Xu Xing disappeared mysteriously, there was only one explanation, she rushed into the bottomless pit in order to punish the evil and promote the good, but she didn't think about whether there was an enemy trap below, but Shen Feng believed in Xu Xing's strength, and after Xu Xing killed someone, she would definitely be able to return the same way, so it was enough to leave a note.

Lu Xian took out his notebook and wrote on it: "I'm Lu Xian, Xu Xing, if you see the note, please stay where you are, wait to meet us, don't go far." ”

After writing the message, Lu Xian grabbed the piece of paper, pulled it hard, and with a "snort", a piece of paper was torn off and pressed against the edge of the cave with a stone.

Qi Lingshan felt puzzled when he saw the cave leading to the underground, and couldn't help asking, "You say, who dug the cave here?" If Skylanif had done it, he wouldn't have had the ability to do it, and it would be unlikely that he had dug it up by the treemen. ”

The hole in the ground is only the thickness of a bucket, and the huge body of the tree man must be impossible to walk through the hole, so Qi Lingshan feels strange, such a regular cave will definitely not be excavated artificially, but if it is not excavated artificially, who else can dig it?

Shen Feng couldn't figure this out, such a small cave could only accommodate one person crawling underground, and there was no reason to use a narrow cave, so it was definitely not the work of mutant plants.

"Alright, let's take advantage of this time to go into the Treant's cave and explore it first." Shen Feng didn't want to dwell on this matter forever, so he immediately put forward the idea of going to the cave to investigate.

Lu Xian and Qi Lingshan didn't have any opinions, they followed behind Shen Feng, following the footprints of the tree man, and there was no danger along the way, Shen Feng thought that he would see a few tree people in the mist, but along the way, let alone the tree man, even the vines didn't see a few.

Soon, the three of them saw a high mountain in front of them, even in the mist, it was a black and longing area, and there were bullet casings on the ground around it.

Lu Xian picked up the bullet casing and looked at it, although there was a lot of dirt on it, but there was no rust on it, it was obvious, this was the bullet casing left not long ago.

"City Lord, there was a battle here, you see, there are so many bullet casings on the ground, and the battle must be fierce." Lu Xian directly analyzed.

Shen Feng then remembered the battle that Skylanif said before, the soldiers were all killed by the tree people, it seems that the place where all this happened is here, and I don't know how Skylanif escaped.

"Go ahead and have a look!" Shen Feng continued.

There is a huge cave at the foot of the mountain, and there are even more things that can be seen on the ground, there are guns, and clothing, and even some hair, which are scattered on the ground, and there are many burnt marks at the entrance of the cave.

"Let's go, go down and see, a flashlight is enough." Shen Feng then said to Lu Xian and Qi Lingshan.

Shen Feng was confident and retreated from the cave with the two of them.

……

When Xu Xing was about to catch up with the sloppy man in front of him, he found that the man suddenly disappeared, surrounded by fog, it was not impossible to escape, but the disappearance of this man was too abrupt, as if he had disappeared out of thin air, after seeing this situation, Xu Xing immediately searched for the ground around him, and sure enough, he found a cave.

"What a cunning thing, want to run? That's impossible! When Xu Xing saw the bottomless cave, she immediately sneered and jumped down immediately.

But when she jumped down, Xu Xing encountered an embarrassing thing, because there were still a lot of clothes and equipment in the backpack on her back, and it was easy to jump down at this time, but the cave below slowly became narrower, and Xu Xing was stuck if she was not careful.

Xu Xing felt pain in her chest, and was squeezed by the stones in the narrow place, so she had to lift the backpack on her body high, which could be regarded as passing through the narrow area.

However, after Xu Xing landed, she was stunned for a while, because she found that there was also a light source underground, and there were many roots and vines on the walls and ground in the cave, and some vines had fruits on them, with blue fruits and green fruits, which were emitting fluorescence, and they looked very beautiful.

Xu Xing didn't sigh at the scene under the cave for the first time, but drew his knife and looked around, the scum had already fallen before, and he still had a gun in his hand, if it was plotted, it would be too miserable, so it was most appropriate to find the vicious scum as soon as possible and kill him directly.

However, when Xu Xing looked around, he found that the enemy had long since disappeared, and he was the only one left in the passage.

Xu Xing looked up at the cave that had fallen, it was definitely no problem to climb up at this time, but since they had already come down, Xu Xing didn't want to return in vain.

"I'm here, I must take a closer look at the underground environment, maybe I can make a meritorious service!" Xu Xing said to herself.

Xu Xing knows the purpose of the city lord, the most important purpose is to find a mutant plant, if you find a mutant plant, then you must kill it in the shortest possible time, there is already a mutant plant in Yuzhou, you don't need a second mutant plant, you don't need it, but you can't let others get it.

Another purpose is to find Xiao Sheng, Xiao Sheng is the man Shen Yu likes, and Shen Yu is Shen Feng's sister, there is this relationship, as long as Xiao Sheng can be found, it can be regarded as a great achievement.

Xu Xing thought about it, took out a mirror, smashed it casually, and put a fragment of the mirror on the ground as a marker, if you go back the same way, as long as you see the reflection of the mirror on the ground, you can know the way to leave.

Xu Xing originally thought that it must be very dark underground, but after it fell, she was surprised to find that there was also a light source underground, and there were many fluorescent plants in the cave, which were glowing all the time.

Xu Xing became interested, picked a fruit, and squeezed out the juice inside, which can also emit fluorescence.

"I don't know if it will fluoresce if you eat it, but it's not good if it's poisonous." Xu Xing said to herself.

Next, Xu Xing continued to walk forward, but found that there were many forks in the narrow cave, if you were not careful, you would get lost, and below this a fork followed a fork, as for the animals, they couldn't see anything.

Xu Xing had no choice but to mark the entrance of the cave he passed, so as not to get lost, the passage in the cave could be as high as one person, but there were often raised rocks, so Xu Xing could only bend over and walk, if he straightened up, it would not take long to hit his head full of bags.

Xu Xing walked a distance, she really couldn't stand it, walking underground was too aggrieved, she couldn't stand up, it was too embarrassing to want to crawl on her knees, and in this case, she couldn't see useful information for a long time, Xu Xing wanted to go back the same way.

However, at this time, Xu Xing saw a scratch on the wall on one side: "SOS." ”

SOS is an international signal for help, and when you see this symbol, you can know that someone is calling for help.

"Could it be that someone has been here before, is in danger, and is calling for help?" Xu Xing said to herself.

However, Xu Xing wasn't sure if it was left by the scumbag who came down before, and it was impossible for her to tell when it was left by scratches, so after thinking about it, Xu Xing decided to move on.

There is also a pointing arrow on the stone wall, which seems to be guiding Xu Xing forward.

Xu Xing walked forward in the direction where the arrow appeared, and found more arrows, which immediately lifted Xu Xing's spirit, perhaps, he could find useful clues, as long as he could find useful information, he would definitely be praised by the city lord.

"Brother Shen Feng, just take a good look, I will definitely return to you with useful information." Xu Xing said to herself.

Xu Xing turned around in the passage, followed the direction of the arrow and finally arrived at the destination, here is a huge stone room, there are many vines hanging down at the entrance of the cave, Xu Xing separated the vines and walked in, and immediately found more than 20 people in the stone room, these 20 people are all dressed as miners, and their faces are full of haggardness.

"Who are you?" When the two sides met, both sides were stunned and quickly asked, but neither of them understood each other's words, one side was speaking Chinese, the other side was speaking Russian, the two sides were inconvenient to communicate, and there were no proficient bilingual guys, and it was almost impossible to translate each other's meaning.

Xu Xing was inspired and asked, "Do you know Xiao Sheng?" Xiao Sheng! ”

After this name appeared, everyone immediately reacted, after all, this name is too familiar, and they have all fought side by side before, so it is impossible to forget it so quickly.

Subsequently, the two sides began to use sign language to communicate, Xu Xing also found paper and pen from the backpack, it doesn't matter if the language is not understood, but the drawing can always be understood.

Xu Xing danced and painted, and finally made it clear that he came from the far east to find Xiao Sheng.

And the miners are also very happy, after all, they have not seen a living person appear for a long time, especially the people outside, they have been waiting for rescue, but the rescue has not come for a long time, they are already about to despair, and now, there are people from the outside finally appearing, which suddenly makes people excited.

Next, the miners also danced, explaining the current state of their side, it turned out that they and Xiao Sheng and his party had been separated, and the soldiers had suffered heavy casualties, many soldiers were driven out, and the miners could only hide under the cave, and drill when they found the cave, and unconsciously, they got here.

"In this way, Xiao Sheng may not be dead, maybe they are just trapped below." Xu Xing thought silently in her heart.

"By the way, what do you eat?" Xu Xing continued to ask, trying to find out how these people survived by living underground for a month.

These miners were very helpless, found a lot of yellow-black fur from the ground on one side and handed it to Xu Xing to watch, and wrote and drew in a notebook, making it clear that the food they ate these days turned out to be groundhogs.

Under the explanation of the miners, Xu Xing figured out how the cave here came about, it turned out to be a cave dug underground by marmots in order to survive, the original native dogs are animals that like to burrow, and many animals will also borrow to live in these caves, and after the marmot mutated, the ability to burrow has been further strengthened, and a huge space has been dug underground in one breath.

"In this way, whether it is a hiding place or food, it depends on the groundhog to survive, and the poor groundhog, even if it hides underground, it is difficult to survive." Xu Xing couldn't help but sigh in her heart, these groundhogs can be regarded as making the best use of their resources, digging holes to give humans living space, and leaving flesh and blood to continue to feed humans.

But the question came again, and Xu Xing continued to ask: "Then where does your water source come from?" ”

Xu Xing has heard that in an extreme environment, drinking urine can also replenish water, but it is okay to last for a day or two, and it is too ridiculous to rely on drinking urine for a month.

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