The night was quite calm. Not only did there be no abnormalities outside, but there was nothing unusual in the tribe, but you could hear the sounds from afar from time to time.

Obviously they can sleep, but these people can't sleep.

Although I fell asleep, the doctor who had been tired for so long yesterday got up early and continued to get busy.

Yu Zhengfeng settled down and took Xiaozhuang and Xiaofei upstream along the river.

Sure enough, as they said, the more you go upstream, the clearer the water flow becomes, and in the end you can even see the bottom of the river clearly.

Seeing this, Yu Zhengfeng's face changed and he looked at them, "Do you think the problem here has something to do with this water?"

"I'll take the sample immediately and take it for testing." Xiao Fei also reacted after hearing this, "If this is really the problem... let's find a way to solve it."

Yu Zhengfeng nodded gently and accompanied her to take samples from time to time. But after walking for a while, he saw a group of people from the tribe coming over.

Seeing them coming, they instinctively took the two of them to hide away, but they could see their movements.

It was only at this time that several people were holding clothes in one hand and a bucket in the other. When they arrived by the river, the things in the bucket were poured directly into the river.

In an instant, Yu Zhengfeng also realized that they had poured the excrement directly into the river.

In the surprise of the three, they seemed to not take it seriously. They washed their clothes on the spot after pouring their excrement.

Even Yu Zhengfeng and the others had experienced various scenes when they were training, but when they saw this situation, they couldn't help but frown.

"If I remember correctly, the water they eat is also this river." Xiaozhuang couldn't help but say.

The two nodded subconsciously, but Xiaofei immediately thought of something, "The water we used yesterday..."

"Don't worry, that's from the upstream." Yu Zhengfeng looked at her and smiled.

Xiao Fei finally breathed a sigh of relief after hearing this, "The situation here...it seems that there is no need to be tested anymore. The water for these people to eat, drink and use is in this river, and the water has long been polluted."

"It seems that trying to save them is not only to save the people who are now ill, but also to fundamentally solve the problem." As he said, he was a little hesitant, "But how do they solve the problem when they drink water here all year round?"

"Is it feasible to persuade them to move out of here...?" Xiaozhuang asked suddenly with a whim, "or should we help them dig a well like we did in Langde Village that year?"

"Moving is definitely not possible. Although they do not have the concept of being unable to leave their hometown, they cannot leave just by saying your words."

As he said that, he thought about the possibility of drilling a well, he shook his head and said, "Drawing a well is also unrealistic. This is not our own place. Communication is a problem, let alone drilling a well is not just a human problem, but also requires equipment and conditions for drilling a well."

"What should I do?" Xiaozhuang subconsciously looked at the people by the river. At this time, they had already taken the water and walked back.

Yu Zhengfeng looked at them, but suddenly an idea came up and looked at Xiao Fei suddenly, "Do they have no habit of drinking hot water?"

Xiao Fei was stunned when she heard this, and then she reacted, "Yes, why didn't I expect this?"

"They not only drink raw water, but also have no habit of washing hands. It can be said that they don't have anything that we are used to."

"If you can change such a habit, it will be a big change."

Yu Zhengfeng nodded, "In addition... Finally, he taught them that even if they use river water, they should separate the domestic water from excretion. If they can do this, they should be able to prevent such a situation from happening again."

Xiao Fei laughed out loud when she heard this, "I'll go back now and tell the captain about this situation."

Yu Zhengfeng did not stop him and waved at her, "Go."

As he said that, he looked at Xiaozhuang, "There is nothing to see here, let's go back and do our business."

But Xiaozhuang looked at him, "Why do you think it's a bit unreal?"

Yu Zhengfeng laughed out loud, "Yes, in our opinion, such a simple problem has caused such a big impact here. It is indeed a bit incredible."

"But the conditions here are not so exaggerated."

After hearing his words, Xiaozhuang sighed lightly, "If I don't come out, I really don't know there is such a place."

The two returned to the camp and briefly explained the situation here. The reactions of the others were almost the same as those of them, but when they heard that Xiao Fei had already discussed with the medical team, they didn't say anything else.

Their task is to protect the medical team, but the rescue of the medical team is the medical team's business, and they also believe in the communication skills of the medical team.

Yu Zhengfeng didn't say anything more and went straight to the commanding heights to start the warning again.

The situation around him was better than he thought, at least it was safe until now. Although he breathed a sigh of relief, he did not relax too much.

The rescue station learned about their situation, but there was also a shortage of staff there, so in the end he gave up sending support.

So the only team of medical personnel can only fight independently here.

In this tribe, most people are already ill, so serious that there are many people who need treatment. Not to mention other people, these serious ones are enough for them to suffer.

The temporary relief station was quickly filled with people, and fortunately these treatments were quite simple. Even if it was serious, as long as the medicine was available, it would be stabilized soon.

In less than two days, the person who was carrying him into the temporary rescue station could take care of himself simply.

And the other lighter ones have all been cured with their simple treatment.

Of course, after Xiao Fei and the others knew about the water quality here, they also began to slowly change their living habits.

As they began to develop the habit of washing their hands and gradually got used to using hot water, so the situation gradually improved.

Although Yu Zhengfeng did not participate, here you can clearly see how they turned the chaotic tribe into an orderly appearance now.

At this time, I had to admire the medical team.

As the people here get better and better, and the people in the medical team get more and more tired. Seeing this situation, Yu Zhengfeng also knows that he can't stay here anymore.

So I communicated with the people in the camp and finally decided to go back.

Although the rescue team has not yet completed the rescue, they also know that if they continue to delay here, they will delay the normal rescue operation.

So he said goodbye simply and packed up his things and left.

The safety here these days has allowed them to reassess the situation here and set off again. Yu Zhengfeng is worried that they are too careless.

Just as the convoy was just out of the tribe, he reminded, "All military personnel were on level one alert, and the convoy left quickly, and the terrain here was not suitable for long-term stay."

Hearing his words, someone subconsciously complained, "It's been safe for so long, what's there to worry about? Who will attack us in such a place?"

But before he could finish his words, a huge rock suddenly rolled down from the hillside in the distance.

The leading car could have rushed over, but in this way the convoy would be divided into two sections, which would be even more dangerous. So I immediately braked and everyone stopped.

"At eleven o'clock!" Yu Zhengfeng shouted, jumping out of the car and searching in the direction, but a figure flashed by, but he couldn't bear to shoot.

Although he escaped quickly, if he wanted to shoot, he would definitely not be as fast as the gun.

But at that moment, Yu Zhengfeng hesitated because there was a child in the sniper lens and the stone had fallen, even if he killed the other party, he could not recover anything, so he stopped the finger that was about to pull the trigger.

But they were reminded immediately and said directly, "The one who pushed the stone just now was a child, but according to this situation, it is impossible for him to push such a large stone with his own strength. It should have been arranged in advance."

Lao Pao looked in that direction, "No wonder there was no alarm reminder. It turned out that he was a child, the target was too small and too far, and... even if there was a recognition, he would not pay attention."

After hearing his words, Yu Zhengfeng shook his head helplessly, "I just said that the equipment is unreliable, and don't worry about these things now. It is not advisable to stay here for a long time. Blast the stones and let's leave here quickly."

Lao Pao also knew that since there was a problem, it would be impossible for such a little thing, so he hurriedly arranged for alert and opening the way.

After looking at the surrounding situation, Yu Zhengfeng found that the situation here was really too passive. Both sides were high ground. They were in the lowest lying location. Once attacked, they were basically looking up at the attack.

Even if weapons and equipment are dominant, they will still be too passive.

It is easy to break the stone and open the way, but it takes time. So he said without hesitation, "Old cannon will go to blast, Xiaozhuang will leave it here to you, I will occupy the commanding heights to cover everyone."

Both of them understood what he meant, so they did not object, "Be careful!"

Yu Zhengfeng chose the opposite direction of the stone falling down, and jumped a few times to climb up to the heights, but before he could stabilize, he heard the old cannon shouting, "Enemy attack!"

Almost at the same time, gunfire sounded.

Yu Zhengfeng shuddered and hid behind the tree, but an attacker appeared in the direction of the stone just dropped, and was shooting down from a high point.

Although the teammates below were warned by old cannon, they still responded half a beat slower. A soldier next to the car was shot and fell into a pool of blood.

He didn't even bother to see which team sent someone to fall, so he immediately pointed the gun at the opposite side and pulled the trigger without hesitation.

With a 'bang!', a headshot was shot.

Without any stop, Yu Zhengfeng's sniper rifle immediately aimed at the next target.

Under Xiaozhuang's leadership, the people below quickly recovered from the initial chaos and began to fight back.

If it were them alone, being in such a terrain would inevitably be a disadvantage, but now with Yu Zhengfeng's cooperation, the situation has improved a little.

Especially when he shot and shot the head, he instantly suppressed the opponent's firepower.

"Old cannon, open the way and leave here as soon as possible." Although the opponent's attack was temporarily suppressed, it is not advisable to stay here for a long time.

But as soon as the words fell, I saw a person appearing on the top of the mountain opposite, and there was a grenade on my shoulder. My heart was terrified, and there was a shot without hesitation.

The militant who was about to fire the grenade fell to the ground immediately, and there was another shot without pause. The person who was originally going to step forward to take over also followed suit.

But just as he was about to shoot again, a dangerous feeling suddenly came from behind him. Yu Zhengfeng didn't bother to look back and rolled to the side.

With a shot of 'bang!', the bullet hit the position just now, and a spark appeared on the stone.

But after dodging a shot, he was already lying aside. He didn't even bother to get up and looked in the direction where the bullets were fired, but found another group of armed men not far behind him.

Judging from the clothes, they should be in the same group as the people on the other side, but for some reason they did not attack together.

But they appeared at this time, just so close to Yu Zhengfeng.

At this time, Xiaozhuang and the others were still a little hard to deal with the enemy on one side and could not help him at all, so they could only fight against the enemy by themselves.

But the more nervous he was, the calmer Yu Zhengfeng became.
To be continued...