ancient engineer

Chapter 53 Today the sky is dropping gold bricks~

Most chemical reactions are exothermic, but a few, such as calcium nitrate and water, are endothermic.Calcium nitrate is also called saltpeter in the common population. When dissolved in water, it can absorb the surrounding heat and make ice.The first thing Hua Mu thought of was ice, which is a better fresh-keeping item than salt.

People on the coast also tried to bring the salted fish and dried fish to other inner cities for sale, but they didn't win the favor of many people.The shipping cost is expensive, and the over-salty and fishy smell of the sea is not suitable for the taste of insiders, so this kind of storage method is only suitable for making food for home consumption, but not for preserving seafood and selling them at a good price .It is said that some people in the Chinese nation knew how to make ice very early, but they were taken away by the travelers of ancient Rome. As a result, the ancient Chinese could only hide||ice and could not make ice.

"Lord Lei, if the cabins of the fishing boats going out to sea are not filled with water to feed the fish, but filled with ice cubes, which will freeze directly, will the fish sell better?" Hua Mu asked.

"Ice? I saw it in the north when I was young. It can keep food fresh, and when the people there fish in the big lake in winter, they are under the ice. The fish they catch are directly frozen into ice, and the taste is still delicious. If our fishing boats There is ice, which can keep the freshness of the fish, so we can also use ice to transport the fish to other places for sale. It must be a delicious delicacy, and no one can resist the delicious taste brought by the sea! It will definitely sell more than our local high price!

They like to build an ice cellar in the northern region. They take ice and store it in the ice cellar in winter. They also make some cold food in summer, but the quantity is not much.But here we don’t even have snowflakes, and the water never freezes. I heard a person from Fanbang say that there are a lot of ice, even icebergs, on the other side of the sea.Can Mr. Hua get the ice? "Hei Fatty said, his longing for ice can be felt by looking at his pair of round eyes.

"It's too troublesome to fetch ice, and it has to be fetched from the north, and the amount is huge, so it's not suitable for transportation and storage. But if fetching ice doesn't work, let's make ice, it's much easier!" Hua Mu laughed.

"Ice making!!!" This is completely beyond the idea of ​​the black fat man. Ice and snow are all seasonal changes bestowed by nature, how can people make them!

"We can use fire for heating, cooking, and lighting. Why can't we make ice? It's just that the things we need are different." Seeing this man's face full of surprise, even Xuanyuan Yun couldn't help saying, "Today It’s just hot, and I happen to have ice-making materials here, so I’ll make some for you to see.”

"What do you want, Mr. Hua, tell me, and I'll get someone to prepare it right away." The fat man said anxiously, he was already hallucinating, and pieces of lovely crystal clear ice were flying non-stop in front of his eyes.

"A basin and a bowl of water, porcelain basins and iron bowls are better." Hua Mu said.

"Ahem... Mr. Hua, the porcelain basin may not be easy to find..." Poor!But do you want to go to those big families twice, there must be some of those families!The fat black man is already thinking about whether he wants to rob|rob a big family in the county.

"I have it there." Xuanyuan Yun said, after all, he is the prince, and he is also the master of the ceramic kiln. He does not lack these, so even if he travels, he will bring some ceramic daily necessities.

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Hua Mu now has the feeling that she is going to do magic tricks and be watched by the crowd.As soon as the fat black man got excited, he immediately yelled so that all the respected people in the clan knew about it. At first, everyone wanted to avoid it. After all, the secret recipe of ice making is very valuable and it is also a big deal.However, Hua Mu thought that this recipe is simple, and the materials and preparation method are not complicated. It is impossible to keep the secret recipe, so let's just make it public.Xuanyuan Yun didn't have any opinion either, he trusted Hua Mu very much, and this was originally Hua Mu's method, he could handle it himself.

Besides, a mineral management method that Huacao helped to do some time ago, now even if you want to transport soil from the mountain, you have to strictly approve it, let alone mining saltpeter.So as long as you control the collection of saltpeter, you can control the lifeblood of ice making, a way to make money!

"The time to witness the miracle has come." It was rare to see everyone so nervous, especially the group of gray-haired old people who stood up and looked with wide eyes, Hua Mu said in order to relieve the atmosphere.But...quack...it's so cold, no one understands what it means.

The iron wrist is filled with water, placed in the middle of the porcelain basin, and then saltpeter powder is placed around the iron wrist, and then water is slowly added.Iron wrists are easy to conduct temperature, but porcelain basins are not easy. This can most effectively allow the saltpeter powder to absorb the temperature of the water in the iron box when it melts, and freeze the water.

As the water in the saltpeter powder was added, white smoke slowly rose from the water in the iron wrist, and then ice began to form on the surface of the water.As time went by, the ice became harder and harder, and a cool air could be felt around the porcelain basin.

"This... this is really ice!" The fat man was surprised. These old people had only seen ice eggs falling from the sky in bad weather, and they hadn't reacted yet, but they could feel the cold air.

"This powder is saltpeter. It has a lot of output, but it is not very useful. Moreover, this saltpetre can be used repeatedly. The price of making it is extremely low, and it can make a lot of ice." Hua Mu said.

"Mr. Hua, you are the savior of our Hakka family. You are the savior of all the people who rely on the sea to eat!" The patriarch said that he wanted to give a big gift, which shocked Hua Mu.He couldn't bear this big gift from the old man, it would shorten his life! ! !

"I'll let the craftsmen from the Ministry of Industry who are good at building come over to see how the ice-making place is built. Mr. Hua will explain to them in detail. I will also let the people from the Ministry of Industry take the lead in making ice. , if you want to make it privately, you can go to the Ministry of Industry to buy it. But the method of making saltpeter and ice cannot be spread to the outside world, especially to people from other countries. The crime is severely punished!" Xuanyuan Yun said.

"Thank you, my lord! Thank you, my lord!" At this time, the old men who were hit by the pie no longer pretended not to know Xuanyuan Yun's identity.

"I am inspired by the ancestors of the Hakka family. If we tell the foreign people about this method and sell the saltpeter to the foreign people, there will be no peace forever!" This oath can be described as extremely heavy.Hakka people have always been grateful, and they respect those who treat them kindly and those who help them.

"Of course, if you want to sell your seafood to people in Fanbang, that's fine, and you are also allowed to sell ice cubes to them." Xuanyuan Yun continued.

"Actually, besides fishing, you can also raise fish." Hua Mu said.

"Fish?" The fat man asked suspiciously, digging ponds to raise fish?But this place is not suitable for raising freshwater fish, and it is even more difficult to raise things in the sea.

"It is raised in the sea. I saw it when I was in Fanbang. Some people tie several layers of bamboo together, let the bamboo float in the sea, and fix it in one place. Then build some small bamboo houses and wooden houses on top of the bamboo. Get some net-like boxes, and feed some things in the sea. This is relatively safe, and it produces more seafood, but I can’t explain some things now, and I’ll think about it carefully , and then invite a few experienced fishermen to practice.” Hua Mu briefly introduced that the bamboo rafts used by the Hakka people to raise fish are very famous.At night, I called Hua Sheng to ask Du Niang. Hua Mu only knew the general principle, but she couldn't practice it yet.

"Nursing! This is indeed safer than going to sea!" The patriarch was so excited that he almost fainted. Today, the sky is not only dropping pies, but also gold!

"I think this place must be sheltered from the wind. I know that Xiaowan Island is good. The wind and waves are very small. Even in the windy season, it is very calm over there."

"We have bamboo in our village. As long as it is not cut down, it will grow fast!"

"The old Yutou's family knows these things in the sea best, and I'm afraid they will have to find a way to get the young seedlings."

Several old people and their families couldn't wait to start discussing. The fat black man was constantly shouted to arrange this and that, but he was very happy in his heart.

"Mr. Hua, I often wonder whether you were sent by the heavens to save my Xuanyuan country!" Xuanyuan Yun sighed.

The author has something to say: May disease...

It feels like people have no energy, especially on Monday!