The daily routine of the ancient imperial examination

Longmenguan is located in the northwest of the Daqing Dynasty. The climate is cold and dry all year round. The city is located in the narrowest part of the middle of the valley, and the border towns on both sides cross the Gobi desert.

Desert areas are the most water-scarce, but because Longmenguan is next to the Daxue Mountain, there are wells in the city and springs in the mountains, so there is no need to worry about water use.

Since the completion of Longmenguan, there are two natural barriers on both sides, the snow mountain and the Wushan mountain. The terrain is dangerous, easy to defend and difficult to attack. In addition, the soldiers of the time are stationed here. The barbarians outside generally dare not invade easily, and the border has been maintained. A state of peace.

But this time the Goutai tribe invaded, and the opponent's way of fighting to the death reminded Lu Xiuyuan of the heavy snow disaster not long ago.

In Longmenguan and its surrounding villages, thousands of people froze to death, and almost all livestock that could not resist the cold died.

The living conditions of the northernmost nomads should be worse. It is very likely that all the livestock are probably dead. They will not be able to survive this winter, so they attack the city so frantically and want to come here to grab food.

When a problem arises, instead of trying to find a solution to the problem, they want to satisfy their own needs by robbing other people's things by robbing their homes. This kind of robber logic can only be done by these barbarians.

Lu Xiuyuan rested for a while, then recovered, because it was colder sitting all the time, he planned to stand up and move around.

The wind was strong on the city wall, and it was extremely cold. The blood from the fight just now had been frozen into icicles and then condensed into ice in just a short time.

He supported the side wall and stood up slowly, rubbing the icicles on his chest. He heard that Zhou Shen would arrange manpower to prepare for the next round of attack in advance, but he suffered from lack of supplies, so he could only rely on manpower to stop the opponent for a while. Rush up from the ladder.

Lu Xiuyuan touched the ice slag on his chest, and looked at a small river not far from the city wall.

That river is the melting snow on the Daxue Mountain, and thousands of small streams flow here. It is said that drinking snow water can prolong life, so it has always been the place where people in the pass drink water.

But now because of the Little Ice Age, the outside temperature is estimated to have dropped to more than minus 20 degrees, but the river has not frozen.

A principle suddenly came to his mind.

At a certain temperature, when the temperature of the liquid has reached the freezing point, the phenomenon that the liquid is still not solidified is called supercooling, and the liquid at this time is also called supercooled liquid.

Supercooled liquids are generally produced because the liquid is too pure and does not have the crystallization nuclei required for solidification. If the substances required for solidification are put into it, or the liquid is shaken vigorously, the liquid can be quickly solidified.

And they are short of defense materials now, maybe this method will work.

Anyway, let's try it out first.

Thinking of this, Lu Xiuyuan no longer hesitated, rushed down the city wall and came to the river.

Because it is the place where people fetch water every day, there are several buckets beside it. He picked up a bucket and took half of the bucket of water. He walked two steps first and saw that the water in the bucket was only slightly rippling and not frozen. , which shows that as long as the movement is light, water can be carried up the city wall.

Then Lu Xiuyuan raised the half bucket of water high and poured it on a stone on the ground next to him.

With large movements, the disordered molecules in the water were transformed into ordered ice crystals.

The moment the water splashed on the stone, it instantly turned into ice cubes and wrapped the stone tightly.

It really worked!

In this way, when the opposite side comes to attack the city again, there is no need to worry about not being blocked by supplies.

Lu Xiuyuan quickly dropped the bucket in his hand, ran back to the city wall, and told General Zhou the news.

Zhou Shenjiang was a little skeptical at first, but after an experiment and found that it was really possible, he was overjoyed for a while.

The other party patted Lu Xiuyuan on the shoulder and praised: "You are a good scholar! Afterwards, I will help you find the Great General Qinggong to receive the reward!"

Lu Xiuyuan quickly declined, "The time is urgent now, and the water in the bucket cannot fluctuate greatly. It is better to quickly arrange the wooden bucket and manpower, so that it can be safely transmitted to the city wall after a while."

After hearing this, Zhou Shenjiang glanced at the distance from the river to the city wall, and his mood suddenly fell into a trough again.

"It's too far away. At least two or three hundred people are needed. Our current brothers on the city wall are only a few dozen people, which is not enough."

Hearing that there is not enough manpower, Lu Xiuyuan also became worried, but now there is no other way except this.

General Zhou Shen lost his expression and was ready to go back to the city wall to find a way. If he couldn't do it, he would fight to the death. He Zhou Zhu was a hero again after 18 years.

At this moment, Lu Xiuyuan suddenly thought of the people fleeing to the south gate, and hurriedly stopped General Zhou, asking: "On the way here, I saw many people in the city fleeing to the south gate. I wonder if I can contact the brothers there. Stop some strong men and come over to help pass it on?"

After hearing this, General Zhou stopped in his tracks, "The gate to the south is closed, and the people can't get out. They are probably scolding us now, and they probably won't be willing to come and help."

"How will you know if you don't try?" Lu Xiuyuan persuaded.

Thinking of this, general Zhou Shen had a headache and beat himself on the head. He said helplessly: "We can't make any sense with those people. They always think that we soldiers are harming them. It's probably a mess over there now. I guess it would be a waste of time to go.”

Lu Xiuyuan could understand the distress of the other party, so he volunteered: "General Zhou, let Lu Mou try to persuade him."

At this time, there is no other way, but to be a dead horse as a living horse doctor.

General Zhou Shen agreed to his request, and helped to lead a fast horse, "It will be faster to ride on it."

A trace of embarrassment flashed across Lu Xiuyuan's face, he couldn't ride a horse yet.

Seeing this, the other party went back to the city wall and recruited a soldier to take him there.

And General Zhou is in charge of defending the city this time. Although the opposite side is not attacking for the time being, he can't leave at will.

Under the leadership of Xiao Bing, the two of them soon came to the South City Gate.

Lu Xiuyuan raised his eyes and saw that the space in front of him was obviously not small, but it was crowded with people, and the fast horse was forced to stop before it reached the gate of the city.

It is estimated that people who can move around in the city are basically gathered here.

He watched the people in front of him yelling at the officers and soldiers, telling them to open the city gate and let them out.

The scene was noisy and noisy, very chaotic.

He quickly dismounted and found a high ground, and shouted at the crowd like a trumpet.

"Folks of Longmenguan, can you give me some time to listen to what Lu has to say?"

After a short pause, the noise of the crowd returned to the previous noise, and no one paid any attention to Lu Xiuyuan.

Seeing the situation in front of him, it is estimated that it would be useless to directly ask for it. Those people would not listen, let alone come to help. He could only take a sideways approach and start from another angle.

"Everyone, listen to me! I have a method here, which can protect everyone's lives!"

The noisy crowd fell silent in an instant, and everyone's attention turned to Lu Xiuyuan standing on the stone pillar, and they all cast doubtful glances.

One of the big fat guys with a swollen face pointed at him and said fiercely: "If you have any good ideas, tell them quickly, or I will kill you right now."

Although the others didn't speak, the meaning implied in their eyes is probably similar to that of this fat man.

Lu Xiuyuan made a calm gesture, and said calmly, "This method only requires [-] strong men to help deliver the buckets from the riverside to the city wall. It's cold outside, and the water touches The opposite side will freeze instantly to wrap the opponent, and it can also freeze the ladder so that they can't climb the city wall, which will naturally repel the enemy soldiers and keep everyone safe!"

"You little grandson, what bad idea did you come up with? I'll know you're with those people as soon as I guess it!" As soon as he said this, the fat man pointed at Lu Xiuyuan and started cursing.

"If those officers and soldiers were really capable, they would have driven away the Goutai people long ago. As a result, the north city gate is about to be breached. If they don't open the south city gate and let us go, they are really bad! Don't worry! They want to hold us back. To be buried together, you still want us to help you! Dreaming!"

The more the fat man spoke, the more excited he became, and his saliva spewed out, splashing the faces of the people around him.

The others also scolded the officers and soldiers angrily, and urged them to open the door quickly.

The little soldier who brought Lu Xiuyuan over saw this scene and felt very sad. The decision to close the city gate was obviously for the good of the people, but the other party didn't understand.

After hearing what the man said, Lu Xiuyuan knew that it was useless to reason with these people, so he pointed at the fat man just now and asked, "You said that closing the city gate is harming you, so tell me, where are you going to go if the city gate is opened?" Fleeing?"

Seeing that he still had the face to ask this, the fat man took a sip, "Out of the city gate, the sky is big and the earth is big, where can't I settle down? What can I do if I stay in the city? Let the Goutai people kill me?"

"It's so cold outside, and countless people and animals froze to death in the surrounding villages. May I ask where you are going to be a writer? What will you eat? Where will you live? What about your family members? What will they do?"

The fat man choked for a moment, his eyes widened, and his face was flushed red.

Lu Xiuyuan continued to work hard, "You are young and strong enough to persevere, and your high hall can withstand the bumps? Can your children endure this hardship with you?"

Fatty looked sideways at his elderly mother who was beside him. Now that he knew the age of fate, he usually had a headache and brain fever. If he really went out of the city, it would be so cold that he didn't know how long he could last.

When other people saw this, they all looked at their relatives who were with them, and there was some commotion in the crowd for a while.

"Sealing the city gate is actually protecting you. If you go out of the city in this kind of weather, it is estimated that [-]% of people will freeze to death. It's not worth it!" He persuaded earnestly.

The fat man originally thought that what Lu Xiuyuan said was quite reasonable, but now that the other party started to speak for the officers and soldiers again, his unconvinced energy came up again, "Even if I want to go out of the city, even if there is only a chance of surviving, it is better than hiding It is much better to be killed by the Goudai people in the city!"

Those around who thought what Lu Xiuyuan said just now made sense also felt that it would be better to take a gamble, maybe they could survive!

They all tacitly believe that they are the [-]% who are alive, but they don't think how low the chance is.

Lu Xiuyuan was very angry at this fat man, why would he risk his life to get angry at this time!

He couldn't help but yelled, and said rudely: "You unfilial son! It was a waste of your mother pulling you up with feces and piss from a young age, but now you only care about your own life and abandon your mother's life, you Is it still a human being!"

The voice fell, and before the fat man had time to say anything, the old mother beside him tugged at his sleeve and called out: "Fatty, don't listen to his nonsense, mother doesn't care, as long as you can live .”

Hearing this, the fat man felt a little tangled in his heart for a while.

The author has something to say: Thank you very much kX10, ah!The nutrient solution of Muxi X5!Love you guys!Hug and hold high~

The geographical location of Longmenguan in the article refers to the actual Jiayuguan. The supercooled liquid is explained to be from Du Niang. It is a very interesting phenomenon. Here it is assumed that the movement can be carried lightly.