The essence of alum is a colorless cubic crystal, which can ionize aluminum ions when it meets water to form colloidal aluminum hydroxide.

And this colloid has a strong adsorption capacity, which can absorb particulate impurities in water and form precipitates, so as to achieve the purpose of water purification.

Although this method can make the muddy water clear, it will also leave a small amount of aluminum in the water. If the human body takes in a lot of aluminum, it will affect the phosphorus metabolism in the body, lead to osteoporosis, and also cause senile dementia and impetus. Side effects such as genetic variation in children.

Fortunately, this is flowing water, as long as it is not used for a period of time, the elements in the water will naturally decrease.

When the water in the pool in the mountain became clear again, they successively dealt with several small pools below according to the previous marking points. After seeing that they all returned to normal, they went up and down the mountain.

Back at Longmenguan, the river that the people used to fetch water also needs to be dealt with.

The soldiers came to the gate of the city with their belongings, and sprinkled quicklime in the river, and the river boiled and bubbled instantly.

Its momentum was huge, and it also attracted people who gathered around to watch the excitement.

Seeing the boiling water bubbles in front of me, as of now, all the places that need to be disinfected and sterilized have been arranged. Next, we will wait for the previous water to be completely drained, and stop for half a month before letting the people get water.

At first, Lu Xiuyuan was worried that the people in the city would not like it. Unexpectedly, seeing the turbidity of the river, the people would not come here to get water to drink, even if it was purified by alum and became clear.

Now they would rather go to the side to line up to dig well water than take the river water here for drinking.

He and Zhou Shenjiang looked at each other, and the other side looked worried, "After so much trouble, why don't you drink it?"

"In fact, this is also a good thing," Lu Xiuyuan said: "Even if the water in the river is melted by the snow water on the mountain, compared with the well water, it is still not as healthy as the well water that has settled for several layers. Zhou Shen will not have to worry about it." .”

General Zhou said dejectedly, "I don't care. I'm mainly worried about the general. In order to sterilize the river water, the general even offended the capital prison. I don't know how the dog eunuch's secret letter made trouble."

The other party looked at the gradually dispersed crowd in front of them, and everyone spread the news from door to door: the river water was dirty and could not be drunk, everyone went to drink well water.

Listening to it made Zhou Shenjiang feel depressed.

"It was useless to talk about it before, and sealing it with a fence would not stop people from fetching water. If I knew this, I would throw a few piles of shit into the river so that the people would not come again. After this period of time, the matter of disinfection In the long run, the general will not be so passive, hey! Why didn't I think of it at the beginning!"

Hearing this, Lu Xiuyuan was almost amused by General Zhou's words, but thinking of the general's situation now, he could only arrange to pat him on the shoulder.

"The capital prison probably won't be long. Good and evil will be rewarded in the end. The righteous way in the world is vicissitudes of life. People should be optimistic."

General Zhou lightly hammered Lu Xiuyuan on the shoulder, "Lu Xiucai, to put it bluntly, why are you still taking the imperial examination in this court? Wouldn't it be better to stay here and let General Shi hire you as a military advisor?"

Lu Xiuyuan pondered for a moment. After staying here for such a long time, his understanding of this world has gradually deepened.

Although this world is empty and has never appeared in history, as long as he uses Chinese characters, speaks Chinese, and learns the spirit of Confucianism, he is also a part of China.

Huaxia's inheritance has never been based on blood, but on thousands of years of Confucianism and other schools of thought.

He had heard what General Zhou said on the Daxue Mountain before, that apart from the Goutai tribe, there were several other barbarian tribes on the border who were also eyeing them.

The root of it is that the roots of the court are rotten, and the old emperor is fatuous. If reforms cannot be made in time, the court is likely to be overthrown.

It is not easy to change the dynasty. The wolves and tigers and leopards outside are staring at the fat of the Central Plains. If they want to fight, they will only continue to fight internally, weaken their own strength, and at the same time sacrifice countless lives, and how many people will be displaced. .

The price was too high, and he really didn't want to see that scene.

Although his original purpose was to protect his family and himself through the exams, the more he got to know the world, the more eager he was to take the imperial exams. He wanted to be an official, an influential official.

Set up the heart for the heaven and the earth, set the destiny for the livelihood and the people, for the sacred and inherited knowledge, and for the peace of the world.

When people live in this world, they always have to do something so that they will not suffer in vain.

Thinking of this, Lu Xiuyuan also retaliated against the other party, "Let's take the exam first, and if you pass the million marks, your family members will be exempt from taxes."

Candidate Zhou smiled heartily, "Then I wish Lu Xiucai the success of the Toad Palace in advance!"

The two stood by the river and watched the soldiers clean up the river, and the other party took the men back to report.

When Lu Xiuyuan finished here, he went to Dr. Xu's side to help.

Since there are only a very small number of critically ill patients left now, they no longer cook medicine in a big pot like before, but treat each person individually. Compared with before, it is more cumbersome.

After Lu Xiuyuan came over, he took over Dr. Xu, and the old man was finally able to sit beside him for a rest.

Divide the daily dose according to the names of the personnel, and then hand it over to Quartz for the other party to help grab the medicine.

Lu Xiuyuan, who had been busy for more than half an hour, suddenly noticed that there was an extra box of pastries on the table. He raised his head, and saw the two brothers from Pingan Town who he met at the beginning of the treatment.

"What do you mean?" Lu Xiuyuan asked suspiciously.

The older one scratched his head, smiled embarrassedly and said: "Thanks to Dr. Xu and Lu Xiucai's rescue, I was able to get this life back by luck. Since the business was bad and I didn't have much money, I helped others to fight it." I worked part-time for a few days and exchanged a box of pastries to express my gratitude."

"You are so polite. We are all fellow villagers. We should help each other. Take it back quickly." As he said, he stuffed the box of pastries back.

The two brothers retreated in unison, waved their hands and refused: "No need, Lu Xiucai, you just keep it. When we return to Ping'an Town, we brothers will repay you well!"

"Hey, there's really no need to do this." Lu Xiuyuan said helplessly.

The two brothers slipped away without stopping. Before they left, they waved and shouted: "When we pack up our things, we will come back tomorrow to say goodbye to you."

Everyone ran away and disappeared, and the pastry could only stay temporarily.

After finishing today's treatment, Lu Xiuyuan watched as the number of small vendors on the street gradually increased, and the city was returning to its previous appearance.

I couldn't help but feel relieved.

Before he could finish his emotion, Quartz next to him held a pastry in his hand and started calling him.

"Lu Xiucai, come here quickly, Doctor Xu asked us to share the cakes."

He turned back to the table, took out a snack from the box, and took a bite.

Crispy and soft, it melts in the mouth, and it also has the aroma of mung beans, which is very delicious.

But no matter how delicious it was, he only ate a piece and stopped taking it, because it was too sweet and his throat hurt.

After finishing today's task and returning to Boss Wu's house, Lu Xiuyuan still felt his throat hurt and kept drinking water.

It wasn't until midnight that he woke up with a dry throat, lying on the bed, tossing and turning for a while, and then he realized that it must be the wind and cold from climbing the snow-capped mountains for the past two days.

Wind-cold was quite serious in ancient times. Thinking of this, he didn't procrastinate any longer. He got up and began to get medicine for himself from the medicine box next to him. In the middle of the night, he slipped to the kitchen to decoct medicine for himself.

The fire in the kitchen outside alarmed the other people in the house. Dr. Xu came out with his clothes on. Seeing that he was decocting medicine, he asked suspiciously, "I don't sleep so late, what kind of medicine are you decocting?"

Lu Xiuyuan looked back and explained: "I guess I got a cold from going up the mountain, and I feel a little uncomfortable."

Doctor Xu heard that although his voice was hoarse, he was clear-headed and could prescribe prescriptions for him to take medicine, so he didn't take it to heart, "Then don't come over to help tomorrow, the old man and Shishi can take care of it, you can just stay at home and take care of it." Just rest."

Lu Xiuyuan responded, and seeing the other party yawned and returned to the room, he turned his head and continued to decoct the medicine.

He didn't know how long he was busy until he cooked the medicine, and just as soon as it was out of the pot, he poured it into a bowl warmly, and then he lay down on the bed and fell into a deep sleep.

He didn't open his eyes until he was awakened by the sound of the door opening.

Suddenly, it was already bright outside, and the figure of the man who came in with medicine at the door, with fluttering clothes, was Shi Yunchen who hadn't seen him for two days.

Lu Xiuyuan couldn't help being surprised and said, "Why did you come here? Why didn't I see you two days ago?"

The other party put the medicine bowl on the bedside table, curled his lips and began to complain, "I was stared at by my elder brother for endorsement two days ago, today I managed to find a chance to sneak out, and I heard Doctor Xu say that you are sick. This is how it came."

"So that's how it is." Lu Xiuyuan suddenly said.

Seeing that the distance between the two was too close, he was afraid of infecting each other with the wind and cold, so he quickly touched a clean mask from the bedside and put it on.

When Shi Yunchen saw this, he wanted to reach out to help take it off, "What are you doing wearing this in the room?"

Lu Xiuyuan turned around to avoid the opponent's movements.

"Don't pick it, don't pick it, I'm afraid it will infect you."

Shi Yunchen couldn't help but stop, "Then you have to drink medicine, right?"

He turned around and saw that the other party put the medicine bowl on the side of the bed, so he sat up propped up, took the medicine bowl, turned to the inside of the bed, and lifted the mask to blow the hot air on the surface.

The young master looked at his background, couldn't help but frowned and complained: "You said you are a grown-up, and it's cold on the snow-capped mountains, so you don't know how to add more clothes!"

Just as Lu Xiuyuan was about to speak, he was caught off guard by the medicine. He quickly put down the bowl, covered it with his sleeve and began to cough.

He continued to cough for half a minute before he recovered.

"You can choke on taking medicine, let me feed you."

Shi Yunchen forced his body over, put a pillow on his back, helped him to sit upright, then took the medicine bowl beside him, took a spoonful of medicine juice, blew, and handed it to his mouth.

Lu Xiuyuan stared at the spoonful of bitter concoction in front of him, then at the other party, but had no choice but to open his mouth to drink it.

Seeing that he drank it obediently, the young master continued to feed him a spoon without waiting for his reaction.

The capacity of the small spoon is not large, but the power of the traditional Chinese medicine has not been reduced at all. Lu Xiuyuan drank it in a miserable way.

Looking at the small spoonful of medicinal juice in front of him, he instantly had the urge to snatch the medicinal bowl over, causing his mouth to dry up.

But when he glanced over from the corner of his eye, the other party seemed to be very happy to feed the medicine, so he gritted his teeth and endured it.

He closed his eyes and drank the spoonful of medicinal juice fed by the other party. At the end of the bitterness, he was already numb, so he finally finished the bowl of medicinal juice.

After feeding, the young master put down the medicine bowl and heaved a sigh of relief, and Lu Xiuyuan also heaved a sigh of relief.

Hearing his sigh, the other party couldn't help but said, "I've been serving the bowl for so long, so I'm just relieved, why are you so relieved?"

Feeling the bitterness in his mouth, Lu Xiuyuan cast a complicated look at the other party.

Seeing this, Shi Yunchen suppressed a smile and said, "Okay, okay, I know you're suffering from the medicine, so I brought you candied dates."

The other party took out a candied date and handed it directly to his mouth.

Lu Xiuyuan simply grabbed the young master's hand and ate it with his mouth open. During the process, his lips accidentally touched the other's finger, and both of them trembled.

Shi Yunchen was nervous, while Lu Xiuyuan was stimulated by the other party's cold fingers.

He swallowed the candied dates in his mouth, took the opponent's hand, and put it in his palm to cover it, "Why are your hands so cold?"

"I was in a hurry to go out just now, and I forgot to add more clothes." The other party wanted to withdraw his hand, tried, but failed, "You are a patient now, my hands are cold, don't freeze you again."

"Let me warm you up." Lu Xiuyuan ignored his words and continued to help him cover his hands.

Halfway through the cover, he seemed to remember something, took the mask next to him, and continued to put it on.

Seeing the scene in front of him, the young master didn't know how to complain.

Lu Xiuyuan held it warm for a long time, but the opponent's hand was still icy cold, so he moved his body inside and asked tentatively, "Why don't you come up to warm it?"

After speaking, I felt that I was a little rude, after all, their relationship has not yet been cleared up.

Just when he was about to explain that he was joking just now, Shi Yunchen withdrew his hands, took off his boots, and quickly got under the covers.

The chill on the opponent's body came over, and Lu Xiuyuan couldn't help shivering.

The two of them just covered themselves with a quilt and kept warm together. During this period, no one spoke, and the room was completely quiet.

In the end, it was Shi Yunchen who couldn't understand his behavior of wearing a mask on the bed, and reached out to help him take it off.

"Don't! I'm afraid of infecting you with the wind and cold!"

"It's okay, I'm not afraid of the wind and cold." The other party slowly approached him, and slowly stretched out his hands.

Lu Xiuyuan wanted to hide back, but there was already a wall behind him, and he couldn't retreat, so the other party took off his mask.

"Sure enough, it's much more pleasing to the eye."

Lu Xiuyuan wanted to reprimand the other party for his unsafe behavior, but he suddenly found that the young master who had removed his mask, not only did not back away, but was getting closer and closer to him.

Looking at the approaching face of the other party, he swallowed nervously.

The author has something to say: The male lead is still embarrassed now, but he will be supportive after marriage!Really!

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