Chapter 2 Saltpeter Ice Making Method

The sky was bright, about five o'clock in the future, and the men in the barracks began to bury pots and cook rice, and the others practiced guns, knives and bows first, and then ate. Xu Qing felt that there were more than 40 people in this group, and the other two groups were in a team, the team was surnamed Zhang, and Zhang Zhong came from the same township, so Zhang Zhong had a lot of face in the team.

When it came to eating, Xu Qingxing rushed to scoop up a big bowl of wheat rice and started his first breakfast in the Tang Dynasty, but as soon as he entered it, he almost didn't spit out yesterday's sour water.

Breakfast is wheat rice with pickles, and wheat rice is the husked wheat is boiled half-cooked first, then dried, continue to cook and then dried, it is very convenient to eat, but the taste is not good, there is a precedent in history that morale collapsed because of eating wheat rice, which can be seen in general.

Xu Qing looked around and saw that everyone was gobbling up, so he resisted the urge to vomit, took a few bites, and swallowed the pickles, fortunately, the pickles tasted good.

After breakfast, they will go to their respective posts, Xu Qing wants to take advantage of the cold weather in the morning to mow the grass and feed the mules, after cutting the grass, he may have to go to patrol and stand guard with his own group, or chop wood, or carry water, or tinker, anyway, there are no idle soldiers in the army. It was busy until about two o'clock in the afternoon, when the sun was too strong and you could rest.

After Xu Qing finished mowing the grass, Zhang Zhong called him back, saying that he was afraid that he would faint again, and he couldn't do much there anyway.

"In this weather, if only I could have a popsicle to eat." Xu Qing scooped a big scoop of water in the water tank and thought while drinking, "Huh? Ice? That's right! As an engineering student, Xu Qing naturally knows about saltpeter dissolving and heat-absorbing ice making in chemistry. Thinking of this method, Xu Qing became excited, set up a stall selling popsicles in the Tang Dynasty, an exclusive secret technique, saltpeter can be reused, this is a million profits, maybe you can have a car and a house in a few years.

Where to get saltpeter? Xu Qing first thought of Zhang Zhong, because Xu Qing knew him. So Xu Qing trotted all the way to his gang. They are chopping wood and will be exposed to the sun.

"Uncle Zhang, Uncle Zhang••••••" Xu Qing was out of breath.

"Why are you here?" Zhang Zhong wiped the sweat from his forehead.

"The sixth boy, if you faint from the heat, you won't have a vacation tomorrow hahaha..."

"Uncle Zhang," Xu Qing said slowly, "I want to find some saltpeter, I want to eat ice." ”

"Well~~" Zhang Zhong was stunned, obviously not connecting saltpeter and ice, thinking that he had heard it wrong

"Sixth boy, you're not sick and have a bad brain, are you? Where will you get ice to eat on this day, hurry back. ”

While he was talking, Wu Lao, who was wearing a green cloth shirt, walked over, he walked around the ranks, and when he arrived here, he overheard Xu Qing's words, someone wanted to eat ice, and he also shook his head and smiled.

"Which baby?" Wu Lao said lightly.

Only then did everyone see Wu Lao, and they hurriedly got up and shouted "Wu sacrifice wine".

Xu Qing also said hello to everyone, thinking in his heart, he went out to eat ice, and then said:

"Wu sacrifice wine, the kid has a way to make ice."

Zhang Zhong pulled Xu Qing and said to Wu Sacrificial Wine: "Lord Sacrificial Wine, this is the kid that the villain picked up a few days ago. And Wu Xianjiu obviously refused to let Xu Qing go easily, and deliberately said with a straight face: "Do you know that there is no joke in the army, you admit your mistake now, I don't think I heard it." ”

Zhang Zhong knew that Wu Saijiu usually had some literati stubbornness: "Wu Saijiu, the kid got wind fever yesterday, and his brain was a little confused. He turned his head to Xu Qing and said, "Hurry up and admit your mistake to Wu Saijiu!" ”

However, Xu Qing was very calm, he thought that if he could make ice from saltpeter, maybe it would solve the trouble of heat stroke in the army, which was a credit, maybe he could be promoted to a petty officer, at least he would not die easily on the battlefield. Thinking of this, Xu Qing was neither humble nor arrogant and said: "Wu sacrifice wine, the kid can indeed make ice, but he needs some saltpeter." ”

"You •••••" Zhang Zhong showed some anger on his face. Wu Saijiu is not angry, anyway, there is nothing to do in the barracks, of course, for him a sacrificial wine, he is also willing to have some fun, anyway, the board will not hit him.

"Okay, if you don't make ice today, see how I clean you up." Wu Xianjiu joked: "What do you want?" ”

Zhang Zhong stopped talking, but looked at Xu Qing with hatred in his eyes.

Xu Qing replied: "Two copper basins, one big one, one pound of saltpeter, no, two pounds..."

Wu Saijiu saw Xu Qing's serious appearance, and couldn't help but believe half a point, if he wanted to make a large amount of ice, the morale of the troops would be greatly raised, and his Wu sacrificial wine could also grow a big face in front of Liu Zan, a great achievement, maybe he could release an official, and then ordered someone to get it.

The efficiency in the army is very fast, half a pillar of incense time, and everything needed is ready one by one. Because the saltpeter is placed in the military doctor, and the military doctor is also very bored, I asked a little, and heard that someone was going to make ice in these dog days, and I couldn't help but be interested.

"Please move to a cool place." Xu Qing was a little drumming in his heart. Wu Xijiu didn't speak, so he chose a tent nearby, put everything in it, and stood next to him to signal Xu Qing to start.

Saltpeter, whose chemical name is potassium nitrate, is dissolved in water and causes heat to decrease. Xu Qing poured some water in a large basin, then put it in a small basin, poured a basin of water into the small basin, and then poured saltpeter into the large basin, and then stared intently. About ten minutes passed, and before the small basin froze, Xu Qing added some saltpeter to the large basin.

Wu Saijiu and the crowd of spectators were impatient, and they discussed:

"It seems..."

"I just don't know how many sticks this body can withstand..."

"If it doesn't work, I'm afraid that the old man's abacus in Zhang Zhong will fail, hehe..."

"Huh?" I noticed something with a sharp eye. "Look there's a drop of water on the outside of the big basin!"

Xu Qing also found out, he probed in the small basin with his hand, and sure enough, the temperature was very low, so he added another handful of saltpeter.

At this moment, a sudden change occurred, the water surface of the small basin trembled slightly, and in the blink of an eye, a thin layer of ice seemed to grow. "Hissss

After a while, the ice in the small basin was about to grow to the thickness of a finger, and it was only at this time that Xu Qing breathed a sigh of relief, held back his excitement and said to Wu Saijiu: "Lord Saijiu, the ice has come out." ”

At this time, Wu Saijiu had already turned into a surprise as a surprise, he originally watched Xu Qing tinker with a playful attitude, but he didn't expect to really let Xu Qing make ice, which was simply amazing. Wu Xijiu couldn't speak for a long time, and when he heard Xu Qing's words, he eased up, and said very excitedly: "You kid, if you can conquer Qingshan this time, you will have a great achievement!" ”

After speaking, he hurriedly picked up the copper basin and pulled Lang Zhong, rushed out, and hurriedly went to the Zhongjun tent.

At this time, all the spectators had already looked at Xu Qing with admiration, if it weren't for Xu Qing's height, they would almost have looked up and worshiped Xu Qing. And Zhang Zhong also pulled Xu Qing excitedly: "See, this is my soldier, take a look..."

The most depressed person in the room was Xu Qing, Wu Sacrifice Wine Lao Dang Yizhuang picked up the copper basin, saying that it was too late and that it was fast, Xu Qing didn't have time to stop it at all, so he could only shout in the back:

"Oops, my ice, my ice." But no one listened to him, and Xu Qing was quickly pulled back by Zhang Zhong, and he was also very hungry when he saw the ice cubes. On the road, he was very excited, and greeted people when he met them, and many people were so puzzled that they thought he had married a little daughter-in-law.

In the Chinese military tent:

Liu Zan's face was cloudy for a while and sunny for a while, and finally froze at the copper basin in front of him with half confusion and half surprise, and more precisely, at the palm-sized piece of ice. And the Wu sacrificial wine next to it is even more old and blooming, and the smile is extraordinarily bright.

"Wu... Wu Lao, I didn't expect it, I didn't expect that Wu Lao, you would also be able to do immortal arts, how offended......" Liu Zan said in a trembling voice.

"No, no, no, this is made by the soldiers under Zhang Zhong's men, and the old man doesn't dare to take credit." Wu sacrificial wine is also above board, and there is no greed.

After a long time, the ice in the copper basin turned into a large piece, and then slowly melted away, Liu Zan saw enough, slapped the table, and said excitedly:

"It seems that there is hope for going back to the Mid-Autumn Festival this time, Xu Chuliu, I want to remember your great achievements! Hahahahaha......ha