So the two of them, walking and walking, suddenly found a grass nest not far ahead, so they decided to rest here, and only went back the next day to see the situation.

The two barely slept much all night, after all, they were both worried that Yu Yang's strange grandmother would catch up.

On the second day of Zhang Chen, you seem to be a little exhausted, after all, he hasn't slept well for two nights.

"By the way, aren't there any other villagers in this village? You go there and ask, what happened to you all these years when you haven't come back? Zhang Chen said suddenly.

Yu Yang thought that what he said was right, so he decided to ask Sun Xiu, who grew up with him.

The two of them came to Sun Xiu's house, and Sun Xiu was also a little crazy at this time, but he still recognized that it was Yu Yang in front of him.

"Yu Yang, why are you back?" asked Sun Xiu, obviously surprised.

Yu Yang politely said something close to him, and then asked, "I haven't been back for many years, do you know what happened to my grandparents over the years?"

Sun Xiu was obviously a little surprised by this, and after thinking about it, he said: "Your grandparents are both crazy and rising, especially your grandfather is crazy, whoever she will bite as soon as they meet." ”

"I know this, my grandfather was a problem when I was a child, but my grandma has always been fine, how can he be crazy. Yu Yang asked puzzled.

"I don't know about this, I haven't been to your house for a long time, and the people in the village can avoid as far as they can, even if they want to go past your house, they will walk around. Sun Xiu said.

"But your grandparents are better during the day, especially at night, and they can be very scary, as the whole village knows. ”

"But it's strange to say that there are a lot of crazy people in the village over the years, but when I go to the hospital for examination, I can't find anything wrong with my body and spirit, and sometimes I am called crazy, but I don't even know what I have done. ”

When Zhang Chen heard Sun Xiu say this, he knew that this was a phenomenon in the entire village, not just Yu Yang's grandparents.

"Can I take the pulse for you?" Zhang Chen said suddenly.

Sun Xiu and Yu Yang both looked at Zhang Chen with infatuated eyes, and then said, "You are a doctor?"

Zhang Chen nodded, and then said with a serious face: "Since this is the overall phenomenon of your village, it must be related to illness." ”

When Yu Yang heard this, you are excited and scared, excited that since it is a disease, it will be cured, and what is afraid is that if nothing can be found, what can his grandparents do?

"We've all looked for a doctor, and we can't find anything after a physical examination, can you tell what the disease is by checking your pulse?" Sun Xiu said as she looked at Zhang Chen with a look of disbelief.

"I'm not sure about that, but I'll try everything, what if I know? ”

Sun Xiu thought about it and felt that what Zhang Chen said was also reasonable, so she stretched out her hand and asked Zhang Chen to take her pulse.

As a miracle doctor, as long as it is a disease, there is nothing that Zhang Chen can't cure, he concentrated, feeling the changes in Sun Xiu's body every second, and suddenly he found that Sun Xiu's pulse beat for a while, then stopped beating, and after a while, it beat again.

This even Zhang Chen was very surprised, he had seen it so many times, and it was the first time he had encountered such a situation.

I can't even see the reason for the pulse, but I just know that their bodies are undergoing subtle changes, which can't even be checked by the hospital.

"How's that going, doctor, have you noticed something?" asked Sun Xiu with an expectant expression.

Zhang Chen shook his head, withdrew the hand that was being taken by him, and said in a serious voice: "I can only feel that there have been subtle changes in your body, but I can't see what is wrong." ”

So it was good, disappointed, so he said, "When we went to the hospital, the doctor said the same, hey, I was looking forward to it." ”

"Don't talk about it to death, I didn't say that I didn't have to find out the cause of your illness. ”

"What's the way?" Yu Yang and Sun Xiu said in unison.

"As the saying goes, if you get sick from your mouth, you should first investigate your diet, and tomorrow you will find out. ”

"In terms of diet, how do you check this? We eat very ordinary things every day, and each family eats different things, so it should be very difficult to check. Sun Xiu said curiously.

"It's not necessarily difficult, but it's easier to check, since this happens to every household in the village, let's check what you've eaten together, such as water. Zhang Chen said with a serious face.

"You have a point, who are you mentioning? I remembered that our well water had been polluted in recent years, and that every household had to filter the water before it could be drunk. Sun Xiu became serious again.

"Then do you know what the reason is? The water is polluted, what is the source of the pollution?" asked Zhang Chen puzzled.

Yu Yang, who was on the side, listened with relish, how much he wanted to find out the cause quickly, so that he could quickly cure his grandparents' illness.

"It's like a chemical factory that drains dirty water into us, and it's been much better in the past few years, and in the past few years, every house could smell the chemical liquid as soon as the wind blew. Sun Xiu said seriously.

Sure enough, the chemical factory, they have been poisoned, and their nerves have been stimulated, so everyone will become nervous, and if it is serious, they will become crazy, just like his grandparents.

"I'll check the water first. Zhang Chen said seriously.

For Sun Xiu, this is unwanted, and finally there is a person who can understand the cause of their madness, which means that they are saved.

"Okay, I'll take you to the well in our village. With that, Sun Xiu took Zhang Chen and Yu Yang to the edge of the well at the east end of the village.

Zhang Chen looked at the water in the well, and it didn't seem to be anything special and it was very clear, but there was a slight smell, and if you didn't smell it carefully, you couldn't smell it.

I saw Zhang Chen mix a glass of water up, in the sun, it also looked slightly yellow, and there were some substances that could be seen by the naked eye, Zhang Chen put the water on the tip of his nose and smelled it, and asked for a short time that it was okay, and after a short while, his nose began to itch, and caused careful observation, and found that the substances in the water were not impurities as people say, but small microorganisms.

"Sure enough, it's these things that are doing the trick. Zhang Chen said excitedly.

"You know why, let's hear it. Yu Yang also became excited.

Zhang Chen nodded and responded: "If you guessed correctly, the source of pollution in the water is this kind of microbial bugs in addition to chemical liquids." ”

Sun Xiu and Yu Yang were shocked when they heard this, their mouths grew up, they couldn't imagine that there were still insects in the water they usually drink.

"But we usually have filtration, and after filtration, there are no such impurities in it. ”

"Although the insects are filtered out, there are insects in the water, and the toxic substances excreted will dissolve in the water, no matter how you filter and purify it, it is not clean. Zhang Chen said with a serious face.

"Oh my God, this is terrible, this water has been drunk for several years, no wonder the people in the village are not in good spirits day by day. Sun Xiu suddenly realized.

"Zhang Chen, then do you have a way to save the villagers and get rid of the poison on their bodies, so that their spirits can return to normal. Sun Xiu asked pleadingly.

Sun Xiu said these words, which Yu Yang also wanted to ask, after all, he didn't want his grandparents to be poisoned to death for drinking water.

"Now that the cause has been found, there is a way to treat it. But I'm not sure my method will work, I need someone to treat me first. ”

Zhang Chen's meaning is to let Sun Xiu be his first patient, relatively speaking, its symptoms are not serious, and the effect of treatment will be much better.

When he said this, her eyes never left Sun Xiu, she was not stupid, and she understood what Zhang Chen meant, so she said: "Then I'll come, it's more convenient, my symptoms are clear, if you can cure me, you can cure them." ”

Zhang Chen nodded with satisfaction, in his heart he was still grateful to Sun Xiu, after all, she was willing to let a stranger treat her, not to mention whether it would be cured or not, but this heart of trusting him Zhang Chen would definitely not live up to it.

As he spoke, Zhang Chen took out a small bottle from his pocket, poured the water into the bottle, and followed Sun Xiu back to her home.

"Now that we have found out the cause of the disease, we will inform the villagers not to drink the water here for the time being, so as not to poison too deeply. Zhang Chen said solemnly.

Sun Xiu nodded, and then went door-to-door with Yu Yang to tell them not to quote the water here, if you want to drink, you have to go to the village outside to fetch water, although it is harder, but compared with your own life, life is still important.

Of course, the villagers didn't want to make themselves crazy, so they all agreed with what Sun Xiu and Yu Yang said.

At this time, Zhang Chen was studying the samples he brought back in the room, and he observed carefully and found that the microorganisms inside were alive, and they had been swimming in the water.

Then Zhang Chen took out a piece of gauze, capped it from the mouth of the bottle, and then put it upside down in another bottle.

Slowly, the water dripped out of the bottle drop by drop, and Zhang Chen observed again that the microorganisms in the water were all filtered on the gauze.

But there are still living microorganisms in the filtered water, which is no wonder, the villagers are not as careful as Zhang Chen's filtration, and the intention is that such a delicate gauze can miss one or two, not to mention the water filtered by the villagers, maybe how many microorganisms are there.

Even if they are drunk in their stomachs, they will not be killed, they will only live in the cells of the human body, disturbing the nerves.

They are dormant during the day, and at night when people are resting when their immunity is at their worst, during which time they become active, so at night, people are in their hallucinations.

As for Yu Yang's grandfather, his situation will be due to the differences in the human body, and Yu Yang's grandfather's body may be more suitable for the survival of microorganisms, so her grandfather's situation will be relatively heavier.

After Zhang Chen did a series of research, he probably understood how to treat it, but he didn't know if it would have other side effects, but if he didn't try it, how would he know that it wouldn't work.

In the afternoon, Yu Yang and Sun Xiu came back after informing the villagers, and when they saw Zhang Chen wiping needles, they asked curiously, "What are you doing?" ”

It was Sun Xiu who spoke, she had been dizzy since she was a child, she was scared when she saw something pointy, and when she saw Zhang Chen wiping needles, she became afraid.

Zhang Chen could guess that she was scared when she looked at Sun Xiu's expression, in order not to make her nervous, Zhang Chen said: "Haven't you been pierced with acupuncture, it doesn't hurt at all." ”

After hearing this, Sun Xiu hurriedly shook his head and said anxiously: "If you get a needle, I won't do it, you can find someone else." ”

Zhang Chen smiled when he saw Sun Xiu say this, he didn't say anything, picked up a needle and pierced the acupuncture point on his hand.

Sun Xiu's eyes widened and he looked at Zhang Chen in surprise, thinking that he was really ruthless to himself, and even said that he would prick himself with such a frightening thing as a needle.

"Oh my God, are you going to hurt, I'm scared when I look at it. Sun Xiu said in surprise.