After sending off Eluri and Leon, Tang En went straight to the Engineering Research Institute.
"Where's Brian?"
The young man was flattered and said, "Master Brian is at the furnace in the back."
Furnace?
When Tang En found Brian, he was building something excitedly. Although it was snowing outside, the area around the furnace was very dry. The apprentices nearby were even sweating.
"What are you doing?"
"Brother, you're here?"
Brian laughed wildly. "The previous battle inspired me. I've decided to build a new kind of armor. Believe me, you'll love it!"
"… Okay, good luck."
Tang En wanted to let him build the greenhouse, but it seemed that he would not be able to calm down in a few days. So, he went to find Nokia. The gnomes should be more interested in this kind of knowledge.
"Greenhouse?"
As expected, Nokia's interest was piqued. "Can you explain in detail?"
Tang En and Nokia chatted as they drank their hot drinks. He told Nokia about the principles and construction of greenhouses. In fact, Tang En himself only knew a little about greenhouses. He only knew that they used glass or plastic to insulate the cold air and keep out the heat. Vegetables were grown in an environment with constant temperature and humidity.
But knowing that this method was feasible was enough in Prandal. If the technology could not be solved, it could be solved with magic. This was the essence of magic modification.
"I understand. It's really a wonderful idea, but I don't think it's feasible."
Nokia was amazed by Tang En's idea, but he denied the feasibility of this plan.
Edgar, who had nothing to do, shook his head as well. "Just by changing the temperature and humidity of the environment, they can make the vegetables that grow in other seasons grow in winter … I find it unbelievable. Perhaps only the gods … Oh, and the elves, like Miss Grandia, can do this."
Due to Grandia's recent activities, she was very popular in Ellington. Many people knew that the food they ate was grown by Grandia, so they were very grateful to her.
"Relying on the Druid's power is too limited. What I want to solve is a method that can be replicated. No matter who it is, as long as they build a greenhouse and follow the standards, they will be able to successfully replicate and grow vegetables and fruits."
Although the power of the druids was very convenient, humans could not always rely on the elves. Not to mention, there were so few elven druids. How could they satisfy the needs of the entire human race? The only way to solve the problem was to rely on humans themselves.
"Alright, as you said, we can give it a try."
Nokia clapped his hands and said, "Anyway, it's been snowing recently, and the researchers don't have much to do. Why don't we give it a try?"
They had materials such as crystals and universal alloys, so they only needed to prepare a little and started work in the afternoon.
The place they chose was a piece of land outside Ellington that had not yet been rented out. This piece of land had been frozen due to the snow, and the frozen soil was very hard. However, with Tang En around, this was of course not a problem.
"Are you sure this method will work?"
As the Minister of Agriculture (in name), Grandia was also called over. The little girl was originally hiding at Clover's place, drinking hot fruit tea and waiting to see the draft as soon as possible. However, she was dragged out by Tang En, and now she had nowhere to vent her complaints.
It was clearly snowing like goose feathers, and the snow on the ground was very thick, but Grandia was still wearing the emerald green short sleeves and miniskirt from before. She did not feel cold at all.
"Of course it will work … Aren't you cold?"
"We elves are a race that can be in tune with nature. Of course, we won't feel cold."
"… You're not cold-blooded animals."
Tang En was speechless. What kind of cheat did Nisclaire give the elves?
"For the first construction, I'll do it myself. Nokia, you guys record the key points and tricks of the construction and make it into a standard manual. Make sure to let others copy the manual in the future."
As Tang En spoke, he opened his hands, and a twisted vortex appeared above his head. The well-cut universal alloy pillars flew out one by one and hung in the air at a certain distance. There were some thin pipes connecting them to each other.
As soon as Twain snapped his fingers, the universal alloy pillar fell to the ground with a rumble and firmly pierced into the frozen soil. Then the frozen soil dissolved and strengthened under the effect of magic. After tightly wrapping around the universal alloy, it turned back into stone and firmly fixed the pillar in place.
After all the pillars were fixed, it was time to fix the surrounding walls. As the walls would consume a lot of universal alloy, the current production could not be wasted, so Tang En used a very rough solution — earth magic.
Using the earth magic, Stone Wall, he built a circle of solid stone walls. It was cheap and sturdy and durable!
After installing the alloy gate on the remaining exits, Tang En began to seal the ceiling.
Large pieces of colorless and transparent crystals were taken out. After processing, these crystals were very smooth and had high light transmittance. It was very suitable to be used as the roof of the greenhouse.
Of course, the cost of these crystals was slightly higher. If there was quartz sand, after firing glass of various shapes, the cost would definitely be further reduced.
The crystals were fixed through the card slots on the universal alloy. After the crystals were laid out one after another, the card slots were firmly fastened on top. It was very stable.
These crystals were only as thick as a little finger, but because a magic array had to be set up here to protect the greenhouse, there was no need to worry about the degree of firmness. The more troublesome thing was to increase the insulation effect, so a double-layer structure was used — including the stone wall just now.
Soon, the ceiling was all sealed.
"Is this a greenhouse greenhouse?"
Grandia frowned slightly. "Isn't it just a sealed house … with crystals on the roof."
"That's not all."
Tang En motioned for everyone to enter the greenhouse. After closing the door, the cold wind disappeared from the surroundings. However, the greenhouse was still covered with thick snow and cold air.
"The reason why it's called a greenhouse greenhouse is because it will be very warm inside … Wait a moment."
Tang En snapped his fingers. "Fire."
Blazing flames instantly ignited around Tang En. The flames turned into a brilliant ribbon and flew out, circling around the greenhouse. The snow on the ground melted in the blink of an eye, turning into water vapor and gathering on the ceiling. It froze on the crystals and melted again …
The temperature in the greenhouse rose rapidly, and the hard frozen soil began to soften again. All the water vapor inside was released, and soon the whole greenhouse became humid and stuffy.
"Phew! It's so stuffy! "
Edgar couldn't stand it anymore and unbuttoned his shirt. "Magic is really incredible. It's obviously such a cold winter, but it's so hot without a fireplace."
"Almost there."
After the frozen soil in the field had been plowed several times, Tang En dispersed the fire elements. At this moment, the temperature in the greenhouse had risen to about 28 or 29 degrees Celsius. Moreover, due to the enclosed double-layer insulation environment, this temperature would be maintained for a long time. If the greenhouse was full of vegetables and fruits and had more carbon dioxide, the insulation effect would be better.
"Dicarios, your little brother can come over now."
Tang En said to the air, and then a fire element appeared out of thin air. The fire element stared blankly at Tang En, waiting for his order.
"Fire element?"
Nokia asked curiously, "Do you want to use the fire element to maintain the temperature here?"
"Yes. Do you see the stove in the middle? That's the central boiler of all the pipes. When the temperature drops, the fire element will heat up the boiler there, and then the hot water will be transmitted to the whole greenhouse through the pipes, increasing the temperature here … I call it heating. "
"Other people can't hire elemental creatures."
Watching the fire element go under the boiler in a daze, Tang En smiled and said, "The standard manual says that you can change it to burning the boiler to quickly increase the temperature … In fact, if you use compost fermentation, you can also increase the temperature, but the efficiency is too slow."
"As for humidity and sprinkling water, you can ask the water element to help. The manual will be written according to the previous pipeline irrigation technology."
"In addition to these, because it's in the greenhouse, it's too troublesome to drive in the farming machine. So, you can use the power of the earth element to plow the land."
"And after planting a lot of crops, a lot of carbon dioxide will accumulate in here. When the time comes, you can use magic to drive the exhaust fan, or use the power of the wind element …"
"My lord, what is carbon dioxide?"
"… A colorless gas. If the concentration is too high, it will kill people. Make a special note."
Nokia quickly memorized these key data. Whether it was the double-layered glass that could preserve heat or the colorless gas that could kill people like carbon dioxide, they were all very new knowledge.
"In order to let you see the results as soon as possible … Grandia?"
Tang En smiled and waved his hand, and Grandia walked out unwillingly. She took out the vegetable seeds that she had prepared beforehand. She casually tossed them, and the seeds accurately fell into the soil that had been turned over. She finished sowing more than ten acres of farmland in minutes.
Seeds needed a lot of time to germinate, but in order to let them see the results of the experiment as soon as possible, Tang En let Grandia perform a catalytic experiment. As long as they could see that the seeds could grow normally in the greenhouse, the effect would be achieved.
In fact, if it wasn't for the fact that he didn't know how to synthesize nutrient solution, Tang En would have wanted to directly create a more efficient soilless culture. Not only would it take up less space, but the yield of many vegetables would also increase by a lot. The yield per unit area would also increase geometrically.
Now, he could only use the greenhouse technology to barely increase the yield of vegetables here. At least, after the increase in the yield of vegetables, it would fill some of the gaps in the food supply, reduce the price of winter vegetables, increase the average nutritional intake of people, and finally improve their overall physical fitness.
Of course, Tang En's ultimate goal was to increase their average combat strength.
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