Chinese dining table

As long as the place of Chang'an enters the fifth month of the lunar calendar, it is basically not suitable for human survival.

Because there is no rain, the sky is clear, the sun is white and the ground is hot.

Therefore, the gunpowder workshop in Qujiang exploded again, this time without causing too much damage, only one person was blinded by the sawdust blown up by the gunpowder explosion in one eye.

Then, Liu Rengui learned a lesson that gunpowder should not be exposed to the scorching sun.

This kind of experience Liu Rengui has summed up a lot, and each one can be called blood and tears.

A little over a month has passed since the Xianyang Bridge explosion, but Liu Rengui's gray hair has all turned white.

Under the urging of Li Zhi and Li Ji, the formula of gunpowder has basically been finalized, and the next step is to purify the saltpeter as much as possible.

Now that the formula has been finalized, the next step is to carry out finalization tests and large-scale observation tests.

The location was chosen in Qujiang.

Officials above the fourth grade in Beijing have been invited. Yun Chu and Ru Rou also want to visit, but unfortunately, their rank is not high enough.

After Ruan went home and pleaded with the ancestor at home, he got the promise from the ancestor to take him into the experiment site.

Yun Chu asked Li Shen, but in the end, he didn't go to such a high-secret gathering at all, and he didn't even think about it.

Then, Yunchu fixed his eyes on His Royal Highness Li Hong, the acting king who was carrying his sister behind his back and fiddled with the waterwheel at the small water scene in hot weather.

That's right, just six days ago, the emperor canonized his fifth son, Li Hong, as acting king, a title equivalent to first-rank treatment.

Looking at the sweaty acting king Li Hong, Yunchu felt that he must really, really want to go to the Qujiang school military field to watch a magnificent gunpowder explosion at this time.

Li Hong was unwilling to go.

He felt that it was too hot. In Jinchangfang, he could wear shorts, a small vest, and a lotus leaf hat on his head, and run around barefoot. After going to Qujiang, he had to wear several layers of clothes and salute countless people. , bow, say hello, maybe you will meet troublesome people to test his knowledge.

Therefore, he would rather hang out with the pandas in Jinchangfang all day with a girl who weighs more than [-] kilograms on his back, rather than go to the school military field to be exposed to the sun.

The most important thing is that his father and mother will go to the school military field, what if they are taken away, this will affect his pleasant vacation time in Jinchangfang.

In the end, he couldn't hold back Yunchu, especially when Yunchu was threatening to throw him into the water lily pond by lifting his legs upside down, he happily cried and agreed to Yunchu's request and took him to the Qujiang school military field Watch the explosion.

Traveling on behalf of the king is very troublesome, at least more troublesome than that of Ji Wang Li Shen. There are as many as twelve palace guards alone. This is still in Chang'an. If he leaves Chang'an City, his entourage will not be less than three hundred .

At the same time when other people become kings, the palace will be rewarded, and if there is no one, the construction will be accelerated. It is said that Wu Mei said that Li Hong, the acting king, did not have a palace. In the future, when Li Hong grows up to be ten years old, it will not be too late.

Yunchu thinks this is not the case. It is more likely that Wu Mei finds it troublesome. There is still a huge East Palace vacant to the east of Chang'an. At that time, it will be more convenient for Li Hong to live in it directly. Why do you want a dilapidated palace? .

It is estimated that Li Zhi also thought so, so he handed over the Ganlu Hall in the Taiji Palace complex to Li Hong to live in.

The king’s house does not have one, but there are all the officials attached to the entourage and guard of honor. The master of the king is Shangguanyi, and Li Yifu is accompanied by Yunchu. When Li Hong opens the mansion and builds teeth in the future, there will be more officials attached to him. give him.

Daizhou controls the Central Plains in the south, controls the Moyuan in the north, and Yanmen Pass in the fief is listed as the first of the nine frontier passes. It cannot be said how rich it is, but it is true that there are many soldiers and horses there.

This is also the fief that Wu Mei carefully selected for her eldest son. I have to admit that Wu Mei broke her heart for her eldest son.

Sitting in the heavy carriage, Li Hong kept bumping his head against Yunchu's arm, shouting over and over again, it's too hot, it's too hot.

Seeing that this little person was really hot enough, Yun Chu said, "When we get to the school's military field, we will ask Liu Rengui for some saltpeter. We will use saltpeter to make some smoothies for you to eat."

"It's a lie, my father also said that most of the ice in the ice cellar has melted this year, and it has become a luxury to have an iceberg in the palace to cool off.

He also said that if he hadn't waited for Liu Rengui to finalize the gunpowder, he would have gone to Jiucheng Palace with his mother to escape the summer heat.

Can you get something that my father lacks? "

"Yes, as long as you don't tell your father or mother, I will help you make ice to relieve the heat."

"Why can't you tell father and mother?"

"Because, once you tell them, I'll be dragged into making ice for them, which I hate."

"I really hate going to the Qujiang school military field. Why do you have to force me to go? Master Shangguan said, don't do to others what you don't want."

"Because you can't beat me."

Yunchu found that Li Hong was becoming more and more difficult to deceive, so he simply ended the conversation between the two with violence.

After arriving at the school military field, the attendants of the Dai Wang were not allowed to enter, so only Dai Wang Li Hong, who was accompanied by Duan Yunchu, entered the school military field in a daze.

After Yunchu entered the school's military field, Li Hong was useless, so he handed Li Hong over to his master, Shangguanyi, and Yunchu found a cool and windy place to watch the gunpowder experiment arranged by Liu Rengui.

To be on the safe side, the explosion point was arranged three hundred paces away. It was a specially built half of the city wall. The thickness and height of the city wall were similar to those of Chang'an City. Careful.

It is very likely that it was not built by Liu Rengui, but a section of the city wall built by the emperor himself, or under the supervision of Li Ji himself.

The purpose is to test the power of gunpowder.

Yunchu felt that Liu Rengui's gunpowder might not be able to blow up such a city wall. To blow up such a city wall, he would need a lot of TNT anyway. Black gunpowder would not have much destructive power on such a city wall.

When the sun was running, even in the shade, Yunchu still felt like he was on fire.

Just as he was about to take off his obstructive coat, Li Hong ran over with a teapot in his arms. Yunchu took the teapot, and was surprised when his hand touched the teapot, because the teapot was cold.

After opening the lid of the teapot, I found that it contained not only sour plum soup, but also crushed ice jingling in the sour plum soup.

"Where did you get the ice?"

"It was given by Liu Rengui. According to him, saltpeter can be used to make ice, and they made this ice from discarded saltpeter."

Looking at the ice cubes in the teapot and listening to Li Hong's words, Yunchu felt that there were a lot of copper coins and flew away from his eyes.

Tang natives already know how to use saltpeter to make ice?
Li Hong said disdainfully: "Just now you said that making ice with saltpeter is a secret of your family.

Master Shangguan said that alchemists in the Sui Dynasty had already discovered the art of making ice with saltpeter. He also said that water fell into the saltpeter and then froze, so the alchemists identified saltpeter as a great cold.

Mr. Shangguan also said that even without saltpeter, people in the Han Dynasty could already make ice in midsummer.

The book "Huainanzi Bishu" says, put some water in an urn, and then start heating. When the boiling is almost done and the water in the urn is getting less and less, it will be filled with water vapor.After quickly withdrawing the fire, seal the mouth of the urn, and the sealing material is mainly thick cloth.

After the mouth is sealed, it is sunk into a deep well, and after three days, the urn is lifted up, and ice is produced.

It's not unusual to make ice in the middle of summer, you big liar. "

Yun Chu was dumbfounded by Li Hong's lesson, and was speechless.

Even though Yunchu deceived Li Hong, Li Hong generously brought him a large pot of iced sour plum soup to relieve the heat, so that this big liar would not be roasted into a scum by the sun.

The sour plum soup with added ice and icing sugar tasted very good, and after one sip it was soothing to the whole body, but unfortunately, the more Yun Chu drank it, the more sour he felt.

After drinking less than half of it, the teapot in his hand was snatched away by the tenderness that was about to burn, and he drank the sour plum soup in one go, opened his chest, and fanned the wind vigorously: "Why do you have this thing to drink, my grandpa? I gave a bowl at the side, and it was not my turn to drink at all."

Yun Chu looked tenderly and said, "Have you heard of making ice with saltpeter?"

Looking at Yun Chu gently and puzzled, he said: "I know, but saltpeter is too expensive, and there is no way to make large pieces of ice, so it's tasteless, that is, rich people who are greedy for cold will get some. Everyone uses ice storage."

Yunchu asked again: "Do you know the book "Huainanzi Bishu"?"

Gentle and puzzled: "It should be the book "Huainan Wanbi Shu". It was compiled by the disciples of Huainan King Liu An in the Western Han Dynasty. It contains all kinds of wonderful things that warlocks would use. Why are you suddenly interested in this book? gone?"

Yun Chu felt that his throat was very uncomfortable, coughed twice and said, "Do you have this book at home? Can you lend me a read?"

She smiled gently and said: "This is a casual book I read when I was ten years old. I naturally have it at home. If you want it, I will give it to you."

Yun Chu grabbed Gentle's shoulders with both hands and said, "You'd better read this book again, it's very interesting."

Gentlely patted Yunchu's hand away, pointed to a group of soldiers who were digging tunnels under the sun and said: "Shut up, Liu Rengui's demonstration has begun."

Yun Chu looked around and saw two earth dragons approaching the city wall. As the dust rose, a huge shield was buckled on the top of the deep pit, which could resist the sharp arrows flying from the city.

After a while, Tulong arrived under the city wall, and after a while, a captain holding a red flag waved the flag, and saw a group of people delivering some square packages into the tunnel continuously. .

Soon, all the packages were placed, and a group of soldiers like marmots ran out of the tunnel.

Gentle and trembling said to Yunchu: "Otherwise, let's go to watch under the shed built by giant trees, I always feel that it is not very safe here."

Attachment: The next chapter will be released at 2:2 pm on the [-]th, you read it first, I will continue to write, the starting point of this book, welcome everyone to read on the Qidian app——